
Harrison
- County:
- Jackson County
- County Seat:
- No
- Area (mi²):
- 2.106
- State:
- Illinois
Harrison is a CDP located in Jackson County, Illinois. Harrison has a 2025 population of 975. Harrison is currently declining at a rate of 0% annually and its population has increased by 4.39% since the most recent census, which recorded a population of 934 in 2020.
The average household income in Harrison is $67,766 with a poverty rate of 10.02%. The median age in Harrison is 57.2 years: 63.1 years for males, and 53 years for females.