Skip to content
Prairie Record
Log in

← All districts

County in Illinois

Mercer County

About 15,500 people, median household income $74,200.

District lines run through Mercer County, so who represents you here depends on where you live. Search your address to see yours.

Who lives in Mercer County

Census survey estimates for 2020 to 2024, rounded.

People

Population
15,500
Median age
44.7 years
Under 18
21%
65 and over
22%
Veterans, of adults
8%
Speak another language at home
3%

Race and ethnicity

Hispanic or Latino, of any race
3%
White, not Hispanic
93%
Black, not Hispanic
1%
Asian, not Hispanic
under 1%

Income and housing

Median household income
$74,200
Below the poverty line
9%
Bachelor's or higher, adults 25+
21%
Owner-occupied homes
84%
Median home value
$147,000

2024 vote for president

Donald Trump, Republican
62.5%
Kamala Harris, Democrat
35.3%
Other candidates
2.2%

Votes counted, by precinct. Source: MIT Election Data and Science Lab, precinct returns (public domain).

Represent all of Mercer County

Mercer County's districts

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 (18)

Cities, villages and unincorporated communities, with the number of people in the county’s part of each at the 2020 Census.

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.