Wyoming Township is located in Lee County, Illinois. As of the 2010 census, its population was 1,376 and it contained 589 housing units. Wyoming Township was originally named Paw Paw Township, but the name was changed on May 14, 1850.
According to the 2010 census, the township has a total area of , of which (or 99.94%) is land and (or 0.06%) is water.