Whiteside County | |
|---|---|
 Whiteside County Courthouse, Morrison | |
 Logo | |
 Location within the U.S. state of Illinois | |
 Illinois's location within the U.S. | |
| Coordinates: 41°45′N 89°55′W / 41.75°N 89.91°W | |
| Country |  United States |
| State |  Illinois |
| Founded | 1836 |
| Named for | Samuel Whiteside |
| Seat | Morrison |
| Largest city | Sterling |
| Area | |
| • Total | 697 sq mi (1,810 km2) |
| • Land | 684 sq mi (1,770 km2) |
| • Water | 12 sq mi (30 km2) 1.8% |
| Population (2020) | |
| • Total | 55,691 |
| • Estimate (2023) | 54,498  |
| • Density | 80/sq mi (31/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 17th |
| Website | www |
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.[1] Its county seat is Morrison.[2] 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.
- ^ "Whiteside County, Illinois". United States Census Bureau. Retrieved June 10, 2023.
- ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.