1. Why can’t I find a name in the GNIS Database?
Sometimes the official form of the name can be slightly different, so a wildcard
search should be conducted (will degrade search time). For example, a search
for Mill Creek will not find Millcreek (spaces are valid characters). However,
simply searching for Mill would find the desired entry, and then extraneous
entries could be eliminated by then refining the search. For example, search
on “%Mill.”
The name for which you are searching is historical or less used. Activate
the variant search for this condition (search time degraded). See also,
“Man-made & Administrative” features where the explanation
also applies here. For more information contact the GNIS
Manager. Top
2. I think I have found an error in the GNIS Database. How do I
report it?
Send the information indicating precisely what you believe is the “error.”
We shall investigate, correct accordingly, and let you know. Please contact
the GNIS Manager. Top
3. Why does the entry say the feature is “in” a community,
when I know it is not?
Often, users of the data can misinterpret the content of certain
fields. The field entitled “USGS 7.5’ map” may be one
of these fields. Upon examination, please note that the entry indicates
that the “community” name associated with the named feature
is actually the name of the USGS topographic map on which the feature
is located. This in no way implies that the feature is in this community
(although it could be), but that it is simply wholly or partially on the
map named for this community. In fact, the feature in question may be
on a map named for one community yet is “within” another community
that happens to be on that map. A USGS map is usually named for the most
prominent feature within the bounds of the map. These standard topographic
maps cover approximately 60 square miles. We must locate each feature
to the standard base map on which it is located. There is no attempt to
associate the feature to the community, populated place, or minor civil
division (township or town) in which it is located. In fact, since only
about 20 percent of the communities nationwide are incorporated or have
legal boundaries, in most cases it is not really possible to determine
if a feature is or is not “in” a community. For more information
contact the GNIS Manager. Top
4. Can I obtain information regarding who is buried in a particular
cemetery?
No, we do not maintain information on individuals and their history, or
the interments at specific cemeteries. This database is the repository
for official geographic names and locative attributes (County, map name,
latitude, longitude) about named entities of all types of features, of
which cemetery is but one type. We can often assist genealogists by locating
obscure or historical churches, cemeteries, or communities. For the information
you seek, we suggest contacting the local or county office of vital statistics
or the administering organization of the cemetery. You may also wish to
contact one of the genealogical sites such as http://www.rootsweb.com
or http://www.usgenweb.com. For
more information contact the GNIS
Manager. Top
5. How can I name an unnamed natural feature?
The U.S. Board on Geographic Names is responsible by law for standardizing
geographic names throughout the Federal Government. There are some policies
governing issues, such as commemorative naming, derogatory names, and names
in wilderness areas, but generally the most important policy is local use and
acceptance. Please note that no natural feature (and certain manmade features)
may be named for a living person. A potential honoree must have been deceased
for at least five (5) years, and must have had a direct and long-term association
with the feature or must have made notable civic contributions. Upon receipt
of a proposal, we shall ask all interested parties to comment. The U.S. Board
on Geographic Names never makes a decision without a recommendation from the
local government, county government, the State Names Authority (in 49 States
and 2 Territories), and all appropriate land management agencies. Only name
proposals for natural features will be accepted, see FAQ #7 for information
on administrative feature names (churches, cemeteries, schools, parks, shopping
centers, etc).
If a mailing address is provided, we can send you an information packet,
or this information can be viewed by visiting the geographic names homepage
at http://geonames.usgs.gov. Click
on ‘U.S. Board on Geographic Names,’
and then on “principles, policies, and procedures.”
There are two methods to submit a proposal for a new name. From the mailed
information packet, complete the Domestic Geographic Names form (PDF
version) to the extent possible and submit it to U.S. Board on Geographic
Names, U.S. Geological Survey, 12201 Sunrise Valley Drive, MS 523, Reston,
VA 20192-0523. One may also submit a proposal using the interactive, online
version found at the Web site. Please read the Principles,
Policies, and Procedures before submitting a proposal. The
entire process is free of charge, but will take approximately six months.
For more information contact the GNIS
Manager. Top
6. How can I propose to change the name of a natural feature?
One can propose to change the name of a feature, but there must be a compelling
reason. Geographic names are usually well established on maps, other documents,
and on signs. The product showing the name will not be reprinted, revised, or
re-issued simply to show a name change, as this is too costly. Although any
approved name change will be reflected immediately in the GNIS, maps, other
documents, and signs will only be changed during the normal revision cycle.
The U.S. Board on Geographic Names is responsible by law for standardizing
geographic names throughout the Federal Government, and discourages name changes
unless necessary. Further, the U.S. Board on Geographic Names states that "changing
a name merely to correct or re-establish historical usage is not in and of itself
a reason to change a name." This is so stated because names evolve, and
even through cartographic recording errors, these evolved names become the name,
and become ensconced in the local toponymic vernacular.
There are some policies governing issues, such as commemorative naming, derogatory
names, and names in wilderness areas, but generally the most important policy
is local use and acceptance. Please note that no natural feature (and certain
manmade features) may be named for a living person. A potential honoree must
have been deceased for at least 5 years, and must have had a direct and long-term
association with the feature or must have made notable civic contributions.
Upon receipt of a proposal, we shall ask all interested parties to comment.
The U.S. Board on Geographic Names never makes a decision without a recommendation
from the local government, county government, the State Names Authority (in
49 States and 2 Territories), and all appropriate land management agencies.
Only name proposals for natural features will be accepted, see FAQ #7 for information
on administrative feature names (churches, cemeteries, schools, parks, shopping
centers, etc).
If you provide a mailing address, we can send an information packet,
or this information can be viewed by visiting the geographic names homepage
at http://geonames.usgs.gov. In
the introductory paragraph, click on ‘U.S. Board
on Geographic Names,’ and then on ‘principles,
policies, and procedures.’ There are two methods to submit a
proposal to change a name. From the mailed information packet, complete
the Domestic Geographic Names form (PDF version)
to the extent possible and submit it to U.S. Board on Geographic Names,
U.S. Geological Survey, 12201 Sunrise Valley Drive, MS 523, Reston, VA
20192-0523. One may also submit a proposal using the interactive, online
version found at the Web site. Click on “Propose a new name
or name change.” Please read the Principles, Policies, and
Procedures before submitting a proposal. The entire process is
free of charge, but will take approximately six months. For more information
contact the GNIS Manager. Top
7. Can I add new entries for manmade and administrative features,
such as churches, cemeteries, schools, shopping centers, etc.?
Yes, for names that are not natural features, simply submit to us
at this Web site the official name of the feature, its precise location,
and a bibliographic reference, that is, a reference to a written source
such as a map, pamphlet, other document, Web site, sign, etc. on which
the name is published. Upon verification, the name will be entered into
the GNIS database. If a precise location is not available or submitted,
the geographical coordinates will be entered as “unknown.”
For more information contact the GNIS
Manager. Top
8. Why are some manmade and administrative features not
listed?
We strive to be as complete as possible, but this is not always the
case. The GNIS data compilation program is a 30-year project begun in
1976 and still basically on schedule. The first phase (1976-1982) included
collecting all names (except roads and highways) from the USGS topographic
maps, but many manmade and administrative features are not shown on these
maps, or they might be shown, but not named. Without knowing the name,
we could not enter the name into the GNIS. Subsequently, the names from
all other Federal sources were collected (1982-1984). After which, analysis
determined that only about 30 percent of the known names appeared on Federal
sources (for manmade features it was a far smaller percentage); therefore,
a second phase was begun, State by State, whereby additional names are
collected from official State and local sources as well as other pertinent
current and historical materials. We are approximately 90 percent complete
and one may view the GNIS status map for
the status as to which States are in progress (green), complete (red),
or not begun (uncolored). Even if a State is complete, we cannot guarantee
that every category is complete since the volume and quality of data varies
greatly State-to-State and even County-to-County. Therefore, while we
anticipate discovering most additional entries (even historical locations),
there will always be those that escape detection. To submit an administrative
name see FAQ #7, or if you think you have found an error
see FAQ #2. For more information contact the GNIS
Manager. Top
9. What datum applies to the geographic coordinates in the
GNIS Database?
Primarily the datum is NAD27. In the future we shall convert the
data to NAD83, but the change will be negligible except in some northwestern
U.S. States, Hawaii, parts of Alaska, and other parts of the U.S. territories
in the Pacific Basin. For more information contact the GNIS
Manager. Top
10. Do you have data I can download?
The digital gazetteers may be downloaded by clicking “Download
GNIS data ” link at the homepage at http://geonames.usgs.gov.
There is a README
file for layout and two files for each State, Territory, and topical
gazetteer. Also refer to FAQ #11. For more information
contact the GNIS Manager. Top
11. Why are there two downloadable files for each State and topical
gazetteer, and what is the difference?
The files with the name fully spelt are report files designed for downloading
and printing a report. The geographical coordinates in this file are in degrees,
minutes, and seconds. The file containing the abbreviation and the term “deci”
is a data file designed for use in a GIS environment. The geographical coordinates
in this file are in decimal degrees to a precision of five places.
These are standard gazetteer files and contain no variant names, historical
notes, etc. More importantly, only the primary geographic coordinates,
States, counties, and topographic maps names are provided. This means
that if a feature is in more than one State, only the State where the
mouth of linear features and centroid of areal features (at a scale of
1:24,000) are located will be included. The same is true if a feature
is in more than one county, and on more than one map, only the county
and map where the center or mouth is located will appear in the standard
gazetteer data. For more information contact the GNIS
Manager. Top
12. Can I obtain driving directions to a feature recorded as an
entry in the GNIS database?
Unfortunately, it is not possible to provide driving directions or any
locative information other than that which is provided in the GNIS listing
(State, County, map, latitude, and longitude). For that type of information,
we can only suggest contacting the administrator of the feature or the
county government. Another possibility is to invoke the map options for
each entry (click on the feature name), or visit a commercial mapping
site such as http://www.topozone.com
or http://www.mapquest.com. For
more information contact the GNIS
Manager. Top
13. What is the most frequently occurring community (city, town,
village, etc.) name in the United States?
There are no official definitions of city, town, village, hamlet, neighborhood,
etc. We classify all named entities where people live as Populated Place, and
we include incorporated places (20 percent of the Nation's communities), as
well as unincorporated places (the majority), housing developments that are
not yet incorporated places, and neighborhoods within incorporated places in
the count of entities classified as Populated Place (ppl).
The most frequently occurring name continues to alternate, primarily
because we are still compiling data. Last year it was Midway at 212 occurrences
and Fairview at 202. Today, it is Fairview at 288 and Midway at 256. Also
of note, Springfield is often supposed to be the only community name occurring
in each of the 50 States of the United States. It is not even close, occurring
in, according to our records, only 34 States. According to our records,
Riverside has the most occurrences in the States of the U.S. at 186 occurrences
found in 46 States with only Alaska, Hawaii, Louisiana, and Oklahoma without
a community named Riverside. For more information contact the GNIS
Manager. Top
14. Why are there no entries for caves or military installations
in the GNIS Database?
There are entries for these categories in the database, but they
are not available at the public Web site.
There is an Interior Department Regulation (43 CFR Subtitle A, Part 37), which
was written in response to and interpretation of the 1988 National Cave Management
Resources Act. The regulation forbids any Interior Department employee from
releasing information regarding the location of a cave classified as significant
on Federal lands according to criteria established by the act. Further, the
regulation has been “interpreted” to extend to all caves on Federal
lands that have not been so classified as “being under consideration for
such classification.”
Within the GNIS database, we presently have the capability to determine
only those caves occurring on lands administered by the U.S. Forest
Service. We do not have the capability to determine electronically those
administered by other Federal agencies or those that are on other lands.
To make such a determination at this time would require resources well
beyond those available. Therefore, until further notice, features classified
as “cave” are not retrievable at the Web site. The regulation
indicates that information regarding the location of caves on Federal
lands must be requested in writing from the office of the Secretary
of the Interior, and that each request will be analyzed on a case-by-case
basis. The address is U.S. Department of the Interior, Secretary of
the Interior, 1849 C Street NW, Washington, D.C. 20240.
Information from this database regarding military installations must
be requested in writing from the Associate Director for Geography at the
U.S. Geological Survey, 12201 Sunrise Valley Drive, Reston, VA 20192.
Each request will be evaluated on a case-by-case basis. This does not
apply to military installations classified as historic, for which information
is available from the GNIS database. For more information contact the
GNIS Manager. Top
15. Is there a compact disc (CD) product available for the GNIS
Database?
A new CD product might be available in future, and will have graphic
capability along with the text-based product. One may now acquire GNIS
data that is valid through July 2000 as part of the LandView
® 5 product (DVD format), which also has graphic capability. Since
July 1999 (the last version of our CD product), we have added approximately
350,000 additional entries to the GNIS database. The LandView® 5
product is currently available for $99.00 from the U.S. Bureau
of the Census.
One may download, at no cost, GNIS data from our Web site at http://geonames.usgs.gov
by clicking on download
GNIS data. There are two files for each State, as well as certain
topical files such as Concise U.S, Historical U.S., and Populated Places
U.S. The file with the State or topical names fully spelt is for reports
and listings while the abbreviated file name including the term DECI,
is a delimited data file for use in a GIS environment and other databases.
The coordinates in the former are in degrees, minutes, and seconds while,
in the latter, the coordinates are in decimal degrees to a precision of
five. However, these are standard gazetteer files and contain no variant
name, historical notes, etc. More importantly, only the primary geographic
coordinates, States, counties, and topographic maps names are provided,
whereas all of that information was provided on the CD. This means that
if a feature is in more than one State, only the State where the mouth
of linear features and centroid of areal features (at a scale of 1:24,000)
are located will be included. The same is true if a feature is in more
than one county, and on more than one map, only the county and map where
the center or mouth is located will appear in the standard gazetteer data.
For more information contact the GNIS
Manager. Top
16. How many counties are there in the United States?
There are 3,141 counties and county equivalents in the 50 States
and the District of Columbia. They are categorized as follows:
3,007 entities named “County”
16 Boroughs in Alaska
11 Census Areas in Alaska (for areas not organized into Boroughs by the State)
64 Parishes in Louisiana
42 Independent Cities (1 in Maryland, 1 in Missouri, 1 in Nevada, and the remainder
in Virginia)
1 District - the Federal District or District of Columbia.
This does not include Commonwealths and territories with what are generally
county equivalents, which are as follows:
Puerto Rico - 78 Municipios
U.S. Virgin Islands - 2 Districts
Guam - 19 Election Districts
Northern Mariana Islands - 17 Districts
American Samoa - 5 Districts
For more information contact the GNIS
Manager.
Top
17. How accurate is the elevation data in the GNIS Database? How
was it measured?
If the elevation of a feature is actually published on the topographic
map, it means that the elevation data represents an actual, precisely
surveyed point, and there is often a benchmark or triangle at the location
on the map, and also for these there is actually a benchmark seal physically
located and anchored into the ground at the site. Elevation data can be
from other surveyed points, which might or might not be marked by an “x.”
If such a number is present, it is recorded as the elevation. If there
is no surveyed point, then for use in GNIS, the elevation is determined
by interpolation of contour lines. These lines are the brown lines on
topographic maps that are drawn to connect points of equal elevation thereby
providing a general schematic of landforms or the “lay of the land.”
In the GNIS database, the Primary coordinate values for communities are
taken at the center of the "original" community meaning the
city hall, main post office, main intersection, etc. For other areal features,
elevation is measured at the approximate center, and for reservoirs at
the dam. The elevation for features classified as summit (all uplifted
features), is recorded at the highest point. The elevation figure is determined
by taking one-half the distance of the contour interval as stated on the
map between the last or highest contour line and where the next contour
line would be located if present. For example, if the last contour line
measures 1,000 feet and the contour interval is 100 feet (the distance
between each contour line), then the elevation recorded for entry into
the GNIS database is 1,050 feet which is an approximation as the exact
elevation could be anywhere from 1,001 feet through 1,099 feet. For more
information contact the GNIS Manager.
Top
18. What is the difference between “mountain,” “hill,”
and “peak”; “lake” and “pond”; or “river”
and “creek”?
There are no official definitions for generic terms as applied
to geographic names. Every organization will have a definition that is application
driven, and no one office definition is accepted as official. The difference
is thematic and beyond that it is highly perceptive. The difference between
lake and pond is an example. We, at the USGS Geographic Names Office, in developing
the Geographic Names Information System (GNIS) database, have devised 63 broad
categories of feature types with definitions solely to facilitate retrieval
of entries with similar characteristics. So, we define lake as “natural
body of inland water,” and not necessarily applicable to another’s
needs. We have found 54 different generic terms that have characteristics similar
to our definition of lake, but all are classified as lake. The only area of
general agreement is that perceptibly, a pond is smaller than a lake, but even
this is not always true.
We classify all “linear flowing bodies of water” as stream,
a rather neutral term for our use. There are presently 121 generic terms
that fit our broad category stream. As another example, many perceptibly
insist that a creek must flow into a river. Such hierarchies do not exist
in the Nation's namescape as evidenced by Little River flowing into Goose
Creek nearby to our offices here in Northern Virginia. Many controversies
exist, such as mountain/hill, which we call summit (as are 194 other generic
terms applied to features with similar characteristics), and city/town
that we classify as populated place, etc. It might be of interest that
the British Ordnance Survey once defined a mountain as having 1,000 feet
of elevation, and less was a hill, but this was abandoned sometime in
the 1920's we believe. There was even a movie with this as its theme in
the late 1990's - The Englishman That Went Up a Hill and Down a Mountain.
The U.S. Board on Geographic Names once stated that the difference between
a hill and a mountain in the U.S. was 1,000 feet of local relief, but
even this was abandoned in the early 1970's. For more information contact
the GNIS Manager. Top
19. I have heard that the use of the apostrophe “s”,
such as Pike’s Peak (Pikes Peak in the database) to show possession
is not allowed in geographic names, so why are there many such entries
in the GNIS Database?
Please note that there are hundreds of geographic names in the Geographic Names
Information System (GNIS), the Nation’s official geographic names repository,
that carry the genitive apostrophe. The reason is that although the legal authority
of the Board includes all named entities except Federal Buildings, over the
years, the Board has determined that certain categories of named entities that
are broadly determined to be “administrative” are best left to the
organization that administers them. In this category are entities such as schools,
churches, cemeteries, hospitals, airports, shopping centers, etc. The Board
still promulgates these names, but its policies do not apply.
This and the other policies of the Board apply to natural features only. The
U.S. Board on Geographic Names has since its inception in 1890 discouraged the
use of the possessive form, which includes the apostrophe and the s. The possessive
form using an s is allowed, but the apostrophe is almost always removed. There
is nothing in the Board's archives indicating why specifically, only discouraged
use. There are numerous myths such as it looks too much like a rock in water,
and is therefore a hazard, or that in the days of “stick–up type”
for maps, the apostrophe would become lost creating confusion.
We suspect that the reason is simply that the U.S. Board on Geographic
Names does not want to show possession for natural features because “ownership
of a feature is not in and of itself a reason to name a feature or change
its name.” Since 1890, there have been only five decisions by the
U.S. Board on Geographic Names allowing the genitive apostrophe for natural
features. These are: Martha's Vineyard approved in 1933 after an extensive
local campaign; Ike's Point in New Jersey was approved in 1944 because
“it would be unrecognizable otherwise”; John E's Pond in Rhode
Island was approved in 1963 because otherwise it would be confused as
John S Pond (note the lack of the use of a period, which is also discouraged);
and Carlos Elmer's Joshua View in 1995 at the specific request of the
Arizona State Board on Geographic and Historic Names because “otherwise
three apparently given names in succession would dilute the meaning,”
that is, Joshua refers to a stand of trees. Clark’s Mountain in
Oregon was approved by the U.S. Board on Geographic Names in 2002 at the
request of the Oregon Board to correspond with the personal references
of Lewis and Clark. For more information contact the GNIS
Manager. Top
20. Does the GNIS Database contain entries for geographic features
that are historical?
Yes, GNIS actively seek names of features that no longer exist.
There are approximately 100,000 such entries in the database now. To
search for them, type “% historical” (where % is the wildcard
symbol) in the name box. Be advised that search time is severely degraded
when using a prefix wildcard.
We also are very proactive in searching for and capturing information
regarding historical names for features that still exist. We term these
variant names. They are associated with each entry and official name.
To search for a feature by variant name simply activate the variant button
next to the name field at the Web site. Although each geographic feature
can have only one official name, the entry for that name may list numerous
variant names. Please be advised that as these names are not indexed,
search time will be degraded. For more information contact the GNIS
Manager. Top
21. What does the classification “historical” mean?
The term can often be misleading because here it means specifically
that the feature no longer exists rather than diminished use of the feature
or use of the name. So, a ghost town is not historical, only abandoned
(historical notes field), etc. Historical features mostly refer to man-made
features, but can be natural such as shoals, etc. For more information
contact the GNIS Manager. Top
22. What is a variant name?
A variant is any other name by which a feature is or was known. Such names
can be historical or no longer used, or can be in use, but less widespread.
There is only one official name for Federal usage for any feature to which
there is never an exception. For more information contact the GNIS
Manager. Top
23. What is the longest community name in the United States?
The following list is for names of communities only, and does not represent
the longest name in the database.
These are the longest community names with a hyphen or "-" in the
name and total number of characters.
Winchester-on-the-Severn, MD
Linstead-on-the-Severn, MD
Lauderdale-by-the-Sea, FL
Vermillion-on-the-Lake, OH
Wymberly-on-the-March, GA
Kentwood-in-the-Pines, CA |
24
22
21
21
21
21
|
These are the longest community names without a hyphen or "-" in
the name and total number of characters.
Mooselookmeguntic, ME
Kleinfeltersville, PA
Chickasawhatchee, GA
Chancellorsville, VA
Eichelbergertown, PA |
17
17
16
16
16 |
The longest name in the database at present is (blanks are valid characters):
University of Rhode Island Coastal Institute on Narragansett Bay Conference
and Visitor Center in Rhode Island 94
For more information contact the GNIS
Manager.
Top
24. How are U.S. Geological Survey topographic maps named?
Topographic maps published by the U.S. Geological Survey are named by the
regional mapping center responsible for the production or revision of maps within
the State assigned to their region. The name selected should identify the area
mapped, so the most well known and centrally located feature on the map is chosen.
The name assigned to the map may also be scale dependent, that is, the smaller
the scale, the larger the area shown, and therefore, the more potentially named
features available to satisfy the procedure for selecting the name. Generally,
the map is named for the most centrally located, and well-known or largest community
shown and named on the map. Even though centrality is important, the community
for which the map is named may not be centrally located because the largest,
most well known community may not be centrally located. Also, it is important
that the community be, to the extent possible, wholly located within the map.
In some cases, this is not possible because the community for which the map
should be named may fall on two or more maps, in which case a directional term
might be used such as East and West. An example is Washington East and Washington
West, D.C.
If there are no communities on the map or they are very rural, small, and scattered,
the map can be named for the most, prominent and centrally located well-known
physical or natural feature such as a mountain or some similar feature. As with
communities, the feature should be wholly located on the map. Naming maps for
linear features such as streams is avoided unless absolutely necessary because
the usually pass through maps or meander on and off the maps.
Occasionally, a map area is so devoid of named topography that a directional
might be used, as in adding NW or SE to the name of an adjacent map, or
even using the map name from a smaller scale series and applying the directional
term. For more information contact the GNIS
Manager. Top
25. I need to know the official names and definitions (extents)
of regions. For example, what is “the Midwest,” “the
South,” etc?
There are no official designations for regions at
any level of government. The U.S. Board on Geographic Names, which is
responsible by law for standardizing geographic name usage throughout
the Federal government, is often asked for official names and boundaries
of regions. However, there are none officially. Regions are application
driven and highly susceptible to perception. Sometimes, people might agree
on the core of a region, but agreement deteriorates rapidly outward from
that core. The criteria or application would have to be defined, such
as physiographic (this would include parts of States, but there
is more than one system); political (definite disagreement based
upon perception); cultural (unlimited variables); and other applications.
Generally, geographers use four (4) generic requirements for a region
to be formed: area, boundary (or transition zone), at least one factor
of homogeneity or sameness, and a process to drive the region or to keep
it functioning as a region. The American National Standards Institute
(ANSI) has taken the same approach. One can be sure that if anyone or
any organization announces standards for regions, it is only their own
based upon their own needs or application. For more information contact
the GNIS Manager. Top
26. What constitutes the United States, what are the official
definitions?
Geographically, and as a general reference, the United States (short form
of the official name, United States of America) includes all areas considered
under the sovereignty of the United States, but does not include any leased
areas. In 1959, the U.S. Board on Geographic Names (BGN), which is responsible
by law for standardizing geographic names throughout the Federal Government,
was asked to define United States. On May 14, 1959, the Board issued the following
definitions based partially on the reference in the Alaska Omnibus Bill, which
had defined the Continental United States as “the 49 States on the North
American Continent and the District of Columbia…”
United States: The 50 States and the District of Columbia.
Continental United States: The 49 States (including Alaska,
excluding Hawaii) located on the continent of North America, and the District
of Columbia.
Conterminous United States: The 48 States and the District
of Columbia, that is, the United States prior to January 3, 1959 (Alaska Statehood),
which wholly filled an unbroken block of territory. This excludes Alaska and
Hawaii. Please note that the official reference is by use of the term “conterminous”,
however, many use the term “contiguous”, which is almost synonymous,
and because that term is better known.
In May 1999, the Board was asked if these definitions still apply, and
as a result, the Board reaffirmed these definitions on May 13, 1999. For
more information contact the GNIS
Manager. Top
27. What are the territories of the United States?
There are different groupings for areas under the jurisdiction
of the United States. The different classifications have different meanings
and requirements. For more information, contact the Office of Insular
Affairs at the Interior Department's Web page at: http://www.doi.gov
ALL OF THE FOLLOWING ARE UNDER THE JURISDICTION OF THE UNITED STATES.
50 States plus the Federal District known as District of Columbia
Commonwealths
Puerto Rico (Caribbean)
Northern Marianas Islands (Pacific) (former Trust Territory of the United
Nations elected by plebiscite to join the U.S.)
Territories (there are various types)
Guam (Pacific - physically part of the Marianas Islands but politically
separate)
American Samoa (Pacific)
U.S. Virgin Islands (Caribbean) (uses U.S. to distinguish from neighboring
British Virgin Islands)
Miscellaneous Insular or Outlying Areas - these do not have
a permanent population, and are periodically inhabited by military personnel
or scientists, otherwise uninhabited
Baker Island (Pacific)
Howland Island (Pacific)
Jarvis Island (Pacific)
Palmyra Atoll (an atoll is a coral reef) (Pacific)
Johnston Island (Pacific)
Kingman Reef (Pacific)
Midway Islands (Pacific)
Wake Island (Pacific)
Navassa Island (Caribbean)
Freely Associated States - State here is used in
the international sense as an independent country; a new category
of “independent country” except the U.S. is responsible
for their defense.
Federated States of Micronesia (Pacific) former United Nations Trust Territory
by plebiscite elected to become "independent"
Republic of the Marshall Islands (Pacific) former United Nations Trust Territory
by plebiscite elected to become "independent"
Republic of Palau (Pacific) former portion of a United Nations Trust Territory
by plebiscite elected to become "independent"
Note: Corn Islands and Swan Islands were formerly U.S.
but were recently ceded to Nicaragua and Honduras respectively. Also,
Serrana Bank and Roncador Bank were ceded by the U.S. to Colombia. All
of these are in the Caribbean. For more information contact the GNIS
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28. Why are there no ZIP Codes in the GNIS Database?
ZIP Codes are unofficial codes developed and designed
by the U.S. Postal Service solely for the purpose of delivering mail.
Many people incorrectly believe that the ZIP Code area represents the
community. In fact, there are numerous instances of many named communities
in a ZIP Code area in rural areas, and many ZIP Code areas in one community
in urban areas. The ZIP Code area is named (usually unless there is duplication)
for the most prominent community in the ZIP Code area or which it serves.
Also, many of the communities for which the ZIP Code area is named are
not incorporated, which means they do not have legal boundaries, and the
ZIP Code boundary in no way indicates a legal “footprint”
of that named community. Many people, however, do associate with the ZIP
Code in which they reside, however, ZIP Code boundaries are ephemeral
and change periodically. For more information contact the GNIS
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29. All of the coordinates (latitude and longitude) seem incorrect.
What is the problem?
One might confuse the difference between degrees/minutes/seconds and Decimal
Degrees. To convert from decimal degrees to degrees/minutes/seconds with 45.63248
as an example:
1) Subtract 45, leaving only the decimal .63248. Keep 45 for later reference.
2) Multiply by 60, to obtain 37.94880 – 37 is the number of minutes;
37 then will follow 45 degrees.
3) Subtract 37 to leave only .94880.
4) Multiply by 60 once again to obtain 56.92800, and round to 57, which represents
the seconds.
This yields 45 degrees, 37 minutes, 57 seconds.
To convert from degrees-minutes-seconds to decimal degrees using 45 degrees,
37 minutes, 57 seconds as an example:
1) Begin with 57 seconds and divide by 60 to obtain .95000.
2) Add the 37 minutes to yield 37.95000.
3) Divide by 60 once again to obtain .63250.
4) Add the 45 degrees to obtain 45.63250.
Notice that rounding less than one-tenth of a second changes the conversion
by .00002 degrees. For more information contact the GNIS
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30. How often is the GNIS Database updated?
The GNIS database is updated continuously, and the information is instantly
available at the Web site. The downloadable files are updated once every
six to 12 months, or as needed if a considerable amount of work has been
done. The date of the last update is next to the file name. Also, the
States, which are under contract for the extensive data compilation could
have very huge updates performed monthly or quarterly (see green States
on the status map).
There is a maintenance program in which approved Federal agencies participate
by adding information periodically (after staff quality assurance), or
they might wait and update by projects specific to their mission. This
maintenance program is in the early testing stage for State agencies to
do the same. For more information contact the GNIS
Manager. Top
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