
Winchester
- County:
- Scott County
- County Seat:
- Yes
- Area (mi²):
- 1.129
- State:
- Illinois
Winchester is a city located in Scott County, Illinois. Winchester has a 2025 population of 1,444. It is also the county seat of Scott County. Winchester is currently declining at a rate of -1.7% annually and its population has decreased by -7.97% since the most recent census, which recorded a population of 1,569 in 2020.
The average household income in Winchester is $69,739 with a poverty rate of 21.17%. The median age in Winchester is 39.1 years: 34.8 years for males, and 41.9 years for females.