
Morrison
- County:
- Whiteside County
- County Seat:
- Yes
- Area (mi²):
- 2.518
- State:
- Illinois
Morrison is a city located in Whiteside County, Illinois. Morrison has a 2025 population of 3,923. It is also the county seat of Whiteside County. Morrison is currently declining at a rate of -0.73% annually and its population has decreased by -3.54% since the most recent census, which recorded a population of 4,067 in 2020.
The average household income in Morrison is $79,269 with a poverty rate of 7.71%. The median age in Morrison is 39.8 years: 39 years for males, and 41.9 years for females.