Jefferson County is a county located in the southern part of the U.S. state of Illinois. According to the 2020 census, it has a population of 37,113. The county seat is Mount Vernon.
Campus is a village in Round Grove and Broughton townships, Livingston County, Illinois. The population was 166 at the 2010 census.
Barrington Township is one of 29 townships in Cook County, Illinois, USA. As of the 2020 census, its population was 16,514 and it contained 6,172 housing units. The northwestern corner of the Cook County panhandle, it is the county's northwesternmost township. It is also by far the least densely populated township in the county, with less than half the population density of the next least Lemont Township.
Pilot Township is one of seventeen townships in Kankakee County, Illinois, USA. As of the 2010 census, its population was 2,086 and it contained 859 housing units. It was formed from a portion of Salina Township on March 11, 1857.
Bellflower Township is located in McLean County, Illinois. As of the 2010 census, its population was 585 and it contained 267 housing units. Bellflower Township changed its name from Prairie Township on May 17, 1858.
Fayette Township is located in Livingston County, Illinois. As of the 2010 census, its population was 271 and it contained 104 housing units. Fayette Township formed from Belle Prairie Township on February 22, 1870.
Prairie Green Township is one of twenty-six townships in Iroquois County, Illinois, USA. As of the 2010 census, its population was 183 and it contained 92 housing units. Prairie Green Township was originally named Prairie Township, and was formed from Stockland Township, originally known as Crab Apple Township, in March 1857. The name was changed to Prairie Green Township in March 1858.
Chemung Township is the northwesternmost township of McHenry County, Illinois, United States.
Ball Township is located in Sangamon County, Illinois. As of the 2010 census, its population was 6,701 and it contained 2,403 housing units. The township's offices are located in Glenarm. Portions of the village of Chatham are located in this township. Portions of Lake Springfield are also located in the township, including the former site of the flooded town of Cotton Hill.
Sefton Township is one of twenty townships in Fayette County, Illinois, USA. As of the 2010 census, its population was 599 and it contained 256 housing units.
Prairie Township is one of twenty-four townships in Hancock County, Illinois, USA. As of the 2010 census, its population was 380 and it contained 179 housing units. It was formed from Montebello and Carthage townships on September 12, 1854.
Blissville Township is one of sixteen townships in Jefferson County, Illinois, USA. As of the 2010 census, its population was 404 and it contained 172 housing units.
Dodds Township is one of sixteen townships in Jefferson County, Illinois, USA. As of the 2010 census, its population was 2,647 and it contained 1,163 housing units.
Elk Prairie Township is one of sixteen townships in Jefferson County, Illinois, USA. As of the 2010 census, its population was 725 and it contained 350 housing units.
McClellan Township is one of sixteen townships in Jefferson County, Illinois, USA. As of the 2010 census, its population was 1,255 and it contained 534 housing units.
Moore's Prairie Township is one of sixteen townships in Jefferson County, Illinois, USA. As of the 2010 census, its population was 347 and it contained 142 housing units.
Pendleton Township is one of sixteen townships in Jefferson County, Illinois, USA. As of the 2010 census, its population was 1,206 and it contained 461 housing units.
Bowlesville Township is one of ten townships in Gallatin County, Illinois, USA. As of the 2010 census, its population was 188 and it contained 87 housing units.
Crouch Township is one of twelve townships in Hamilton County, Illinois, USA. As of the 2010 census, its population was 374 and it contained 175 housing units.
Flannigan Township is one of twelve townships in Hamilton County, Illinois, USA. As of the 2010 census, its population was 116 and it contained 74 housing units.
