Ogle County is a county in the northern part of the U.S. state of Illinois. According to the 2020 United States Census, it had a population of 51,788. Its county seat is Oregon, and its largest city is Rochelle. Ogle County comprises Rochelle, IL Micropolitan Statistical Area, which is also included in the Rockford-Freeport-Rochelle, IL Combined Statistical Area.
Byron Township is one of twenty-four townships in Ogle County, Illinois, USA. As of the 2010 census, its population was 6,563 and it contained 2,594 housing units.
Dement Township is one of twenty-four townships in Ogle County, Illinois, USA. As of the 2010 census, its population was 989 and it contained 409 housing units.
Flagg Township is located in Ogle County, Illinois. As of the 2010 census, its population was 13,562 and it contained 5,525 housing units.
Grand Detour Township is located in Ogle County, Illinois. As of the 2010 census, its population was 698 and it contained 385 housing units.
Forreston Township is located in Ogle County, Illinois. As of the 2010 census, its population was 2,080 and it contained 885 housing units. Forreston Township was formed from a portion of Brookville Township on March 4, 1857. The village of Forreston and the unincorporated community of Baileyville are located within it.
Lynnville Township is located in Ogle County, Illinois. As of the 2010 census, its population was 642 and it contained 247 housing units.
Marion Township is located in Ogle County, Illinois. As of the 2010 census, its population was 4,135 and it contained 1,531 housing units. This population dropped in 2022 when a population of 3,898 people was recorded.
Maryland Township is located in Ogle County, Illinois. As of the 2010 census, its population was 535 and it contained 251 housing units.
Oregon-Nashua Township is located in Ogle County, Illinois. As of the 2010 census, its population was 4,909 and it contained 2,382 housing units.
Pine Creek Township is located in Ogle County, Illinois, United States. As of the 2010 census, its population was 758 and it contained 320 housing units.
Rockvale Township is located in Ogle County, Illinois. As of the 2010 census, its population was 1,770 and it contained 804 housing units.
Taylor Township is located in Ogle County, Illinois. As of the 2010 census, its population was 963 and it contained 488 housing units. A referendum to merge Taylor Township with neighboring LaFayette Township failed when Taylor voted against the referendum. The referendum was approved in LaFayette.
White Rock Township is located in Ogle County, Illinois, United States. As of the 2010 census, its population was 738 and it contained 298 housing units.
Ashton Township is one of twenty-two townships in Lee County, Illinois, USA. As of the 2010 census, its population was 1,185 and it contained 520 housing units. Ashton Township was originally formed as Ogle Township from Bradford Township on February 12, 1861; the name was changed to Ashton on November 7, 1867.
Bradford Township is one of twenty-two townships in Lee County, Illinois, USA. As of the 2010 census, its population was 324 and it contained 124 housing units. Ashton Township was formed from part of Bradford Township on February 12, 1861.
Groveland Township is located in Tazewell County, Illinois. As of the 2010 census, its population was 19,526 and it contained 8,441 housing units.
Chester Township is located in Logan County, Illinois. As of the 2010 census, its population was 669 and it contained 298 housing units. Chester Township changed its name from Madison Township sometime prior to 1921.
Amity Township is located in Livingston County, Illinois. As of the 2010 census, its population was 866 and it contained 376 housing units.
Barry Township is located in Pike County, Illinois. As of the 2010 census, its population was 1,675 and it contained 791 housing units.
