Whiteside County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 55,691. Its county seat is Morrison. The county is bounded on the west by the Mississippi River. Whiteside County comprises the Sterling, IL Micropolitan Statistical Area, which is also included in the Dixon-Sterling, IL Combined Statistical Area. U.S. President Ronald Reagan was born in 1911 in the Whiteside County community of Tampico.
South Ross Township is a township in Vermilion County, Illinois, USA. As of the 2010 census, its population was 1,070 and it contained 445 housing units.
Albany Township is located in Whiteside County, Illinois. As of the 2010 census, its population was 1,076 and it contained 487 housing units.
Clyde Township is located in Whiteside County, Illinois. As of the 2010 census, its population was 402 and it contained 186 housing units.
Coloma Township is located in Whiteside County, Illinois. As of the 2010 census, its population was 11,371 and it contained 5,162 housing units. It consists of the area in and around Rock Falls, Illinois.
Erie Township is located in Whiteside County, Illinois. As of the 2010 census, its population was 2,006 and it contained 836 housing units.
Fenton Township is located in Whiteside County, Illinois, United States. As of the 2010 census, its population was 536 and it contained 236 housing units.
Fulton Township is located in Whiteside County, Illinois, United States. As of the 2010 census, its population was 4,251 and it contained 2,032 housing units.
Garden Plain Township is located in Whiteside County, Illinois. As of the 2021 census, its population was 983 and it contained 492 housing units.
Genesee Township is located in Whiteside County, Illinois. As of the 2010 census, its population was 784 and it contained 329 housing units.
Hahnaman Township is located in Whiteside County, Illinois. As of the 2010 census, its population was 399 and it contained 148 housing units.
Hopkins Township is located in Whiteside County, Illinois. As of the 2010 census, its population was 2,156 and it contained 904 housing units.
Hume Township is located in Whiteside County, Illinois. As of the 2010 census, its population was 411 and it contained 194 housing units.
Lyndon Township is located in Whiteside County, Illinois. As of the 2010 census, its population was 1,057 and it contained 460 housing units.
Tampico Township is located in Whiteside County in the U.S. state of Illinois. As of the 2010 census, its population was 1,148 and it contained 449 housing units.
Union Grove Township is located in Whiteside County, Illinois. As of the 2010 census, its population was 1,244 and it contained 519 housing units.
Ustick Township is located in Whiteside County, Illinois. As of the 2010 census, its population was 613 and it contained 250 housing units.
Loraine Township is one of twenty-four townships in Henry County, Illinois, USA. As of the 2010 census, its population was 290 and it contained 122 housing units.
Phenix Township is one of twenty-four townships in Henry County, Illinois, USA. As of the 2010 census, its population was 1,672 and it contained 654 housing units.
Yorktown Township is one of twenty-four townships in Henry County, Illinois, USA. As of the 2010 census, its population was 431 and it contained 190 housing units.
