More than 625,000 people reside in the 4th Congressional District, which is located in North Central and West Central Ohio. It extends from the city of Mansfield in the east, to Lima in the west, Findlay in the north and Urbana in the south. The district is comprised of Allen, Auglaize, Champaign, Hancock, Hardin, Logan, Marion, Morrow, Richland and Shelby counties, as well as the western half of Wyandot County.
Major industries of the 4th District include agriculture, manufacturing, energy, defense and healthcare. Of all congressional districts in Ohio, the 4th ranks second in agriculture. In manufacturing, the district also ranks second, as well as 12th in the nation. The area is home to many national and international companies, including BP Chemicals, Ford Motor Company, Proctor and Gamble, Honeywell, Emerson Climate Technologies, Honda Motor Company, International Paper, Whirlpool, Consolidated Biscuit, Cooper Tire and Rubber, Nucor Steel, Berkshire Hathaway, Yutaka Giken and General Motors.
Major energy companies located in the area, which is a significant center for ethanol production and oil refining, include Husky Energy and Marathon Petroleum. In defense, the 4th district is home to the 179th Air National Guard Base in Mansfield and the Lima Joint Systems Manufacturing Center, where General Dynamics Corporation crafts major components for tanks and chemical warfare vehicles. Area healthcare centers include Lima Memorial Health System, Hardin Memorial Hospital, Blanchard Valley Regional Health, Marion General Hospital, MedCentral Health System and St. Rita's Medical Center.
The following counties are in the 4th district:
Allen County—2006 population of 105,788, the county seat is Lima
Auglaize County—2006 population of 47,060, the county seat is Wapakoneta
Champaign County—2006 population of 39,921, the county seat is Urbana
Hancock County—2006 population of 73,824, the county seat is Findlay
Hardin County—2006 population of 31,966, the county seat is Kenton
Logan County—2006 population of 46,189, the county seat is Bellefontaine
Marion County—2006 population of 65,583, the county seat is Marion
Morrow County—2006 population of 34,529, the county seat is Mount Gilead
Richland County—2006 population of 127,010, the county seat is Mansfield
Shelby County—2006 population of 48,884, the county seat is Sidney
Wyandot County—2006 population of 22,553, the county seat is Upper Sandusky
(the western half of the county is included within the Fourth Congressional District)
