Who represents the Illinois 12th congressional district?

Rep. Mike Bost (Republican-IL) represents Illinois’s 12th district in the U.S. House of Representatives.

Illinois district 12 candidates 2026

Rep. Mike Bost (Republican-IL) is the current representative for Illinois’s 12th district. The district is heavily Republican (R+48).

Illinois district 12 election results

Rep. Mike Bost won the 2024 general election with 74.19% of the vote. 367,629 total votes were cast. The full result was 25.81% Democratic, 74.19% Republican. The district is heavily Republican (R+48).

2026 MidtermsSolid SeatR+48D shift +2$743K raised

Recent Votes

YeaonHR4758(Homeowner Energy Freedom Act)·Feb 25YeaonHR4626(Don’t Mess With My Home Applia...)·Feb 24YeaonHRES1075(Providing for consideration of...)·Feb 24YeaonHR4758(Homeowner Energy Freedom Act)·Feb 25YeaonHR4626(Don’t Mess With My Home Applia...)·Feb 24YeaonHRES1075(Providing for consideration of...)·Feb 24YeaonHR4758(Homeowner Energy Freedom Act)·Feb 25YeaonHR4626(Don’t Mess With My Home Applia...)·Feb 24YeaonHRES1075(Providing for consideration of...)·Feb 24YeaonHR4758(Homeowner Energy Freedom Act)·Feb 25YeaonHR4626(Don’t Mess With My Home Applia...)·Feb 24YeaonHRES1075(Providing for consideration of...)·Feb 24

Representative Mike Bost, Republican from Illinois

Representative · IL-12

Mike Bost

Q: Illinois district 12 demographics

The Illinois 12th congressional district is 3.1% Hispanic, 88% White, 4.9% Black, 1% Asian. The median age is 41.6. Median household income is $68,540. 2% of residents are foreign-born. Source: Census ACS.

Illinois's 12th congressional district

Representative Mike Bost represents Illinois's 12th congressional district, serving 746,831 constituents. The district has an estimated median household income of $68,540 and an unemployment rate of 4.6%.

Economic & Demographic Snapshot

746,831Population

↓ 6,111

$68,540Median Incomenat'l $37,585

↑ $4,262

4.6%Unemploymentnat'l 3.5%

↓ 0.3%

8.8%Poverty Ratenat'l 12.4%

↑ 0.2%

75.0%Homeownershipnat'l 65.5%

→ no change

$835Median Rentnat'l $1,163

↑ $52

0.3%Public Transitnat'l 5%

→ no change

23.5 minMean Commutenat'l 26.4 min

↑ 0.1 min

Data sourced from U.S. Census Bureau ACS 5-Year Estimates (2017-2021 vs. 2019-2023). All figures are statistical estimates with 90% confidence level.

Illinois District 12 Demographics

Median Age 41.6 (vs 38.5) · Homeownership 75% (vs 65.5%) · Bachelor’s+ 24.4% (vs 33.7%) · Poverty 8.8% (vs 12.4%) · Income $68,540 (vs $37,585)

Age Distribution

Skews older than the national average (median age 41.6 vs 38.5 nationally). The largest age cohort is 60–69 at 13.5%.

Race & Ethnicity

White residents are the largest group at 88%.

* Hispanic includes respondents of any race. Racial categories include both Hispanic and non-Hispanic individuals.

Education

24.4% hold a bachelor’s degree or higher, below the 33.7% national average. 8.2% of residents lack a high school diploma.

Income Distribution

Median household income is $68,540, well above the $37,585 national median.

Housing

Homeownership at 75% (vs 65.5% nationally). Median rent is $835. Median home value is $151,200.

How People Get to Work

Car-dependent: 80.3% drive alone to work. Average commute is 23.5 minutes.

Source: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates

Data represents 5-year statistical estimates for increased reliability.

Illinois District 12 FAQ

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