St. Clair Township is located in St. Clair County, Illinois. As of the 2010 census, its population was 35,498 and it contained 15,366 housing units.[2] St. Clair Township formed from a portion of Belleville Township on October 5, 1885.
St. Clair Township | |
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Township | |
![]() Location in St. Clair County | |
![]() St. Clair County's location in Illinois | |
Country | ![]() |
State | ![]() |
County | ![]() |
Established | October 5, 1885 |
Area | |
• Total | 20.52 sq mi (53.1 km2) |
• Land | 20.17 sq mi (52.2 km2) |
• Water | 0.35 sq mi (0.9 km2) 1.71% |
Population (2010) | |
• Estimate (2016)[1] | 35,223 |
• Density | 1,759.8/sq mi (679.5/km2) |
Time zone | UTC-6 (CST) |
• Summer (DST) | UTC-5 (CDT) |
FIPS code | 17-163-66729 |
According to the 2010 census, the township has a total area of 20.52 square miles (53.1 km2), of which 20.17 square miles (52.2 km2) (or 98.29%) is land and 0.35 square miles (0.91 km2) (or 1.71%) is water.[2]
![]() | This section is empty. You can help by adding to it. (March 2021) |
Historical population | |||
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Census | Pop. | %± | |
2016 (est.) | 35,223 | [1] | |
U.S. Decennial Census[3] |
Municipalities and communities of St. Clair County, Illinois, United States | ||
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County seat: Belleville | ||
Cities | ![]() | |
Villages | ||
Townships | ||
CDPs |
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Other unincorporated communities | ||
Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
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