net internal migration

• terms & definitions

The Population Estimates Program each year publishes domestic migration numbers for the U.S., states, counties, and metropolitan areas. Demographic components of change (births, deaths, domestic and international migration) are developed as inputs to the population estimates. Estimates of domestic migration are based on migration rates derived from summarized administrative data and the changes in group quarters population. National and state numbers are published at the end of the calendar year, county numbers are published in the following months.

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