
Jerseyville
- County:
- Jersey County
- County Seat:
- Yes
- Area (mi²):
- 5.237
- State:
- Illinois
Jerseyville is a city located in Jersey County, Illinois. Jerseyville has a 2025 population of 8,223. It is also the county seat of .Jerseyville is currently declining at a rate of -0.24% annually and its population has decreased by -1.2% since the most recent census, which recorded a population of 8,323 in 2020.
The average household income in Jerseyville is $85,363 with a poverty rate of 15.21%. The median age in Jerseyville is 43 years: 39.9 years for males, and 44.7 years for females.