Unincorporated community in Coles County and Cumberland County, Illinois
Janesville
District lines run through Janesville, so who represents you here depends on your street. Search your address to see yours.
Who lives in Janesville
Census survey estimates for 2020 to 2024, rounded.
People
- Population
- 39
- Median age
- 50.1 years
- Under 18
- 0%
- 65 and over
- 0%
- Veterans, of adults
- 0%
- Speak another language at home
- 0%
Race and ethnicity
- Hispanic or Latino, of any race
- 0%
- White, not Hispanic
- 100%
- Black, not Hispanic
- 0%
- Asian, not Hispanic
- 0%
Income and housing
- Below the poverty line
- 0%
- Bachelor's or higher, adults 25+
- 0%
- Owner-occupied homes
- 100%
2024 vote for president
Not counted for Janesville on its own: its precincts follow township lines, not the town’s. See the figures for Coles County and Cumberland County.
Represent all of Janesville
Represent part of Janesville
Each represents the part of Janesville inside their district. Under each is how many people lived in that part at the 2020 Census, of 76 in all.
Janesville's districts
U.S. House District 12
All of Janesville
Held by Mike Bost, Republican
- Washington office: (202) 225-5661
About 746,800 people, median household income $68,500.
Largest towns: O'Fallon (part), Carbondale, Marion and 281 more
Illinois Senate District 51
All of Janesville
Held by Chapin Rose, Republican
- Springfield office: (217) 558-1006
- District office: (217) 607-1853
About 216,500 people, median household income $70,900.
Largest towns: Charleston, Mattoon, Mahomet and 90 more
Illinois House District 101
Part of Janesville: 47 people in 2020
Held by Chris Miller, Republican
- Springfield office: (217) 558-1040
- District office: (217) 508-4108
About 109,200 people, median household income $72,300.
Largest towns: Charleston (part), Mattoon, Mahomet and 37 more
Illinois House District 102
Part of Janesville: 29 people in 2020
Held by Adam Niemerg, Republican
- Springfield office: (217) 782-2087
- District office: (217) 813-6036
About 107,300 people, median household income $69,600.
Largest towns: Paris, Robinson, Lawrenceville and 53 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.