Most population lost, US counties · 2010
US counties that lost the most residents from the 2000 census to 2010, by raw count of people rather than percentage. Wayne County, Michigan leads at -240,578. 3,125 counties qualify in total. Ohio carries 6 of the top 25 entries.
Flip the list · Most population gained, US counties →UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS
Frequently asked
Which county has the lowest population change?
Wayne County, Michigan ranks #1 with -240,578 (2010 Decennial Census).
What are the top 5 counties by population change?
Wayne County, Michigan, Cook County, Illinois, Orleans Parish, Louisiana, Cuyahoga County, Ohio, Allegheny County, Pennsylvania.
How many counties are in this ranking?
3,125 counties qualify after filtering for population minimums and data availability. The ranking covers 2010 Decennial Census data.
How is population change measured?
Change in the number of residents from the prior decennial census (raw count, not a percentage). Source: US Census Bureau, 2010 Decennial Census.