While Illinois lost population as a whole in recent years, 15 of its 102 counties gained residents from 2020 to 2024, according to data from the U.S. Census Bureau.. The bureau’s estimates of ...

While Illinois lost population as a whole in recent years, 15 of its 102 counties gained residents from 2020 to 2024, according to data from the U.S. Census Bureau. The bureau's estimates of the ...