Colchester Township, McDonough County, Illinois

Colchester Township is located in McDonough County, Illinois. As of the 2010 census, its population was 1,837 and it contained 896 housing units.

Geography
According to the 2010 census, the township has a total area of 18.19 sqmi, of which 18.07 sqmi (or 99.34%) is land and 0.13 sqmi (or 0.71%) is water.