Population Characteristics - Migration and natural change (1) To resort data: click column headings. To download data: click here. County Name Net Migration (%) Rank Net Migration (%) Net Migration (Number) Natural change (%) Natural change (Number) Source: 2000-2022: U.S. Bureau of the Census, Population Estimates Program, (https://www.census.gov/programs-surveys/popest/data/tables.html); DATE LAST UPDATED: April 12, 2023.