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St. Clair

County in Illinois (USA)

Contents: Population

The population development of St. Clair as well as related information and services (Wikipedia, Google, images).

St. ClairCounty262,852256,082270,056257,400254,796
USA [United States of America]Federal Republic248,709,873281,421,906308,745,538331,449,281331,893,745

Source: U.S. Census Bureau (web).

Explanation: All population totals refer to 2020 boundaries. The 2021 gender and age figures are not fully based on results of the 2020 census.


Further information about the population structure:

Gender (E 2021)
Males123,542
Females131,254
Age Groups (E 2021)
0-17 years59,630
18-64 years152,127
65+ years43,039
Age Distribution (E 2021)
0-9 years31,783
10-19 years33,413
20-29 years30,406
30-39 years33,670
40-49 years31,547
50-59 years33,223
60-69 years32,682
70-79 years18,643
80+ years9,429
»Race« (C 2020)
White153,376
Black/African American76,564
Indigenous881
Asian3,711
Pacific Islander188
Some other5,288
2 or more17,392
Ethnicity (C 2020)
Hispanic or Latino12,582
Other244,818

See also:

Located in:


USA: Counties