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States / Illinois / St. Clair County

St. Clair County

Population 256,791 · ACS 2020-2024

Median Household Income
$73,854
Median Home Value
$180,300
Median Gross Rent
$1,090/mo
Poverty Rate
13.6%
Unemployment Rate
5.8%
Homeownership Rate
68.4%
Bachelor's Degree or Higher
31.8%
Median Age
39.9

Population Over Time

St. Clair County shrank 5.5% from 2014 to 2024.

2014
268,415
2016
265,569
2018
263,463
2020
261,186
2022
256,791
2024
253,694

Source: U.S. Census Bureau, American Community Survey, ACS 2020-2024.

St. Clair County: Population, Income & Housing | CityMetricsUSA