Cahokia Township (T8N R6W) is located in Macoupin County, Illinois, United States.

As of the 2010 census, its population was 3,378 and it contained 1,594 housing units.

[2] According to the 2010 census, the township has a total area of 36.88 square miles (95.5 km2), of which 36.59 square miles (94.8 km2) (or 99.21%) is land and 0.29 square miles (0.75 km2) (or 0.79%) is water.

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