City in Morgan County, Illinois
Jacksonville
Who lives in Jacksonville
Census survey estimates for 2020 to 2024, rounded.
People
- Population
- 18,000
- Median age
- 37.6 years
- Under 18
- 17%
- 65 and over
- 19%
- Veterans, of adults
- 6%
- Speak another language at home
- 3%
Race and ethnicity
- Hispanic or Latino, of any race
- 4%
- White, not Hispanic
- 82%
- Black, not Hispanic
- 8%
- Asian, not Hispanic
- 1%
Income and housing
- Median household income
- $65,400
- Below the poverty line
- 19%
- Bachelor's or higher, adults 25+
- 23%
- Owner-occupied homes
- 64%
- Median home value
- $128,000
2024 vote for president
Not counted for Jacksonville on its own: its precincts follow township lines, not the town’s. See the figure for Morgan County.
Who represents Jacksonville
Jacksonville's districts
U.S. House District 15
All of Jacksonville
Held by Mary E. Miller, Republican
- Washington office: (202) 225-5271
About 746,700 people, median household income $74,000.
Largest towns: Quincy, Decatur (part), Springfield (part) and 351 more
Illinois Senate District 50
All of Jacksonville
Held by Jil Tracy, Republican
- Springfield office: (217) 782-2479
- District office: (217) 223-0833
About 214,400 people, median household income $71,300.
Largest towns: Quincy, Jacksonville, Godfrey (part) and 104 more
Illinois House District 99
All of Jacksonville
Held by Kyle Moore, Republican
- Springfield office: (217) 782-8096
- District office: (217) 223-0833
About 108,000 people, median household income $66,100.
Largest towns: Quincy, Jacksonville, Beardstown and 26 more
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–2024; towns and counties from the 2020 Census, 119th Congressional District and 2024 state legislative district tabulation. Figures rounded by us. Retrieved 2026-10-19. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–2024; towns and counties from the 2020 Census, 119th Congressional District and 2024 state legislative district tabulation. Figures rounded by us. Retrieved 2026-10-19. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.