Indiana's 8th Congressional District (IN-8)
Last updated · 5 sources
Mark Messmer, a Republican, has represented the district since 2025.
The district includes all or part of 21 counties (1 in part).
According to the Census Bureau's 2020–2024 American Community Survey 5-year estimates, the district has a population of 755,776, a median household income of $65,139, and a median age of 39.9. Of residents 25 and older, 23.2% hold a bachelor's degree or higher.
Representative

2026 election
Messmer has filed with the FEC to run for this seat in 2026. 2 candidates for the seat have reported receipts to the FEC.
2 candidates have reported raising money for the 2026 IN-8 race to the FEC.
Election Day: Tuesday, November 3, 2026
| Candidate | Party | Raised | Cash on hand | Through |
|---|---|---|---|---|
| Mark Messmer (incumbent) | Republican | $1,171,366 | $713,500 | Jun 30 |
| Mary Theresa Allen | Democratic | $294,502 | $179,308 | Jun 30 |
Includes primary candidates; FEC filings do not record primary results. FEC race page
District profile
- Population
- 755,776
- Median household income
- $65,139
- Median age
- 39.9
- Bachelor's degree or higher
- 23.2%
Census Bureau, 2020–2024 American Community Survey 5-year estimates
Indiana senators
Todd YoungU.S. Senator for Indiana · Republican
Jim BanksU.S. Senator for Indiana · Republican
Neighboring districts
Sources
- District boundaries (Census Bureau cartographic boundary file, 119th Congress) · retrieved Oct 2, 2026
- Counties by district (Census Bureau relationship file) · retrieved Oct 2, 2026
- District profile (Census Bureau, 2020–2024 American Community Survey 5-year estimates) · retrieved Oct 2, 2026
- congress-legislators (member data, CC0) · retrieved Oct 2, 2026
- Candidates and totals (Federal Election Commission) · retrieved Oct 2, 2026