St. Clair
County in Illinois
Contents: Subdivision
The population development in St. Clair as well as related information and services (Wikipedia, Google, images).
icon links to further information about a selected division including its population structure (gender, age groups, age distribution, urbanization, »race«, ethnicity).| Name | Status | Population Census 1990-04-01 | Population Census 2000-04-01 | Population Census 2010-04-01 | Population Census 2020-04-01 | Population Estimate 2023-07-01 | |
|---|---|---|---|---|---|---|---|
| St. Clair | County | 262,852 | 256,082 | 270,056 | 257,412 | 251,018 | |
| Belleville | City | 43,120 | 42,183 | 44,239 | 42,375 | 40,726 | → |
| Canteen | Township | 15,129 | 11,745 | 10,331 | 8,020 | 7,764 | → |
| Caseyville | Township | 24,989 | 26,042 | 31,946 | 35,547 | 34,678 | → |
| Centreville | Township | 32,477 | 28,708 | 25,442 | 20,192 | 19,345 | → |
| East St. Louis | Township | 40,871 | 31,667 | 26,938 | 18,462 | 17,642 | → |
| Engelmann | Township | 576 | 657 | 726 | 758 | 731 | → |
| Fayetteville | Township | 1,599 | 1,671 | 1,668 | 1,530 | 1,479 | → |
| Freeburg | Township | 4,710 | 4,884 | 5,121 | 5,081 | 4,956 | → |
| Lebanon | Township | 4,451 | 4,047 | 4,534 | 4,845 | 4,711 | → |
| Lenzburg | Township | 1,075 | 1,149 | 1,047 | 951 | 919 | → |
| Marissa | Township | 2,869 | 2,654 | 2,468 | 2,270 | 2,173 | → |
| Mascoutah | Township | 6,415 | 6,470 | 8,322 | 9,423 | 9,559 | → |
| Millstadt | Township | 4,975 | 5,459 | 6,737 | 6,756 | 6,524 | → |
| New Athens | Township | 2,586 | 2,624 | 2,661 | 2,533 | 2,433 | → |
| O'Fallon | Township | 16,599 | 21,853 | 26,065 | 26,393 | 26,029 | → |
| Prairie Du Long | Township | 1,025 | 1,357 | 2,216 | 2,651 | 2,569 | → |
| Shiloh Valley | Township | 10,982 | 10,069 | 11,607 | 12,841 | 12,886 | → |
| Smithton | Township | 2,820 | 3,543 | 4,315 | 4,167 | 4,052 | → |
| St. Clair | Township | 26,807 | 31,440 | 35,702 | 35,774 | 35,646 | → |
| Stites | Township | 1,201 | 668 | 743 | 652 | 627 | → |
| Stookey | Township | 10,596 | 10,088 | 9,895 | 9,238 | 8,886 | → |
| Sugar Loaf | Township | 7,073 | 7,065 | 7,352 | 6,953 | 6,683 | → |
| Illinois | State | 11,430,602 | 12,419,293 | 12,830,632 | 12,813,469 | 12,549,689 |
Source: U.S. Census Bureau.
Explanation: Latest available rebased population figures are used. In case of significant changes, they were recalculated by using census block data.
Further information about the population structure:
| Gender (C 2020) | |
|---|---|
| Males | 124,557 |
| Females | 132,843 |
| Age Groups (C 2020) | |
|---|---|
| 0-17 years | 60,316 |
| 18-64 years | 154,414 |
| 65+ years | 42,670 |
| Age Distribution (C 2020) | |
|---|---|
| 80+ years | 9,904 |
| 70-79 years | 18,034 |
| 60-69 years | 32,457 |
| 50-59 years | 34,489 |
| 40-49 years | 31,405 |
| 30-39 years | 33,667 |
| 20-29 years | 30,879 |
| 10-19 years | 34,843 |
| 0-9 years | 31,722 |
| Urbanization (C 2020) | |
|---|---|
| Rural | 36,437 |
| Urban | 220,963 |
| »Race« (C 2020) | |
|---|---|
| White | 153,376 |
| Black/African American | 76,564 |
| Indigenous | 881 |
| Asian | 3,711 |
| Pacific Islander | 188 |
| Some other | 5,288 |
| 2 or more | 17,392 |
| Ethnicity (C 2020) | |
|---|---|
| Hispanic or Latino | 12,582 |
| Other | 244,818 |