County in Illinois
Piatt County
About 16,700 people, median household income $94,800.
District lines run through Piatt County, so who represents you here depends on where you live. Search your address to see yours.
Who lives in Piatt County
Census survey estimates for 2020 to 2024, rounded.
People
- Population
- 16,700
- Median age
- 42.8 years
- Under 18
- 22%
- 65 and over
- 21%
- Veterans, of adults
- 7%
- Speak another language at home
- 2%
Race and ethnicity
- Hispanic or Latino, of any race
- 2%
- White, not Hispanic
- 95%
- Black, not Hispanic
- 1%
- Asian, not Hispanic
- 1%
Income and housing
- Median household income
- $94,800
- Below the poverty line
- 6%
- Bachelor's or higher, adults 25+
- 33%
- Owner-occupied homes
- 85%
- Median home value
- $181,000
2024 vote for president
- Donald Trump, Republican
- 64.2%
- Kamala Harris, Democrat
- 33.7%
- Other candidates
- 2.1%
Votes counted, by precinct. Source: MIT Election Data and Science Lab, precinct returns (public domain).
Represent all of Piatt County
Piatt County's districts
U.S. House District 13
Part of Piatt County: 10,294 people in 2020
Held by Nikki Budzinski, Democratic
- Washington office: (202) 225-2371
About 747,200 people, median household income $63,100.
Largest towns: Springfield (part), Champaign, Decatur (part) and 91 more
U.S. House District 15
Part of Piatt County: 6,379 people in 2020
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 44
All of Piatt County
Held by Sally Turner, Republican
- Springfield office: (217) 782-6216
- District office: (217) 651-8291
About 215,000 people, median household income $86,200.
Largest towns: Bloomington (part), Morton (part), Decatur (part) and 74 more
Illinois House District 88
All of Piatt County
Held by Regan Deering, Republican
- Springfield office: (217) 782-8163
- District office: (217) 876-1968
About 107,600 people, median household income $93,600.
Largest towns: Bloomington (part), Decatur (part), Monticello and 32 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.
Towns (11)
Cities, villages and unincorporated communities, with the number of people in the county’s part of each at the 2020 Census.
- Monticello5,941
- Bement1,484
- Cerro Gordo1,316
- Mansfield928
- Atwood (part)590
- Hammond508
- De Land447
- Cisco254
- White Heath251
- LaPlace239
- Ivesdale (part)0
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–2024; towns and counties from the 2020 Census, Demographic and Housing Characteristics. 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.