Pearl Township is located in Pike County, Illinois.

As of the 2010 census, its population was 282 and it contained 193 housing units.

[2] According to the 2010 census, the township has a total area of 25.26 square miles (65.4 km2), of which 24.63 square miles (63.8 km2) (or 97.51%) is land and 0.63 square miles (1.6 km2) (or 2.49%) is water.

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