Flat Branch Township is located in Shelby County in the U.S. state of Illinois. As of the 2010 census, its population was 443 and it contained 181 housing units. Geography According to the 2010 census, the township has a total area of , of which (or 100%) is land and (or 0.03%) is water. Adjacent townships Moweaqua Township (north) Penn Township (northeast) Pickaway Township (east) Ridge Township (southeast) Rural Township (south) Assumption Township, Christian County (southwest and west) Prairieton Township, Christian County (west and northwest) Demographics References External links City-data.com Illinois State Archives Townships in Shelby County, Illinois Townships in Illinois