Butler Grove Township (T9N R4W) is located in Montgomery County, Illinois, United States.

As of the 2010 census, its population was 775 and it contained 374 housing units.

[2] According to the 2010 census, the township has a total area of 36.1 square miles (93 km2), of which 35.77 square miles (92.6 km2) (or 99.09%) is land and 0.33 square miles (0.85 km2) (or 0.91%) is water.

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