Posey County leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 77% of adults in Posey County typically vote, above the U.S. average of about 62%. Among adults in Posey County, ~22% vote Democratic, ~56% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How Posey County compares
Among counties within 50 miles, Posey County leans more Republican than 4 of 20 neighbors.
Posey County runs about 26 points more Republican than Indiana as a whole.
Politics vary noticeably by city within Posey County. The northeast side is the most Republican-leaning (R+50) and the south side is the least Republican-leaning (R+35), a spread of about 15 points.
Why Posey County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Posey County, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 83% of residents in Posey County drive to work alone, about 9 points above the U.S. average of 74%. A high family-household share predicts Republican voting, and about 72% of households in Posey County are family households, above 86% of counties.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; Posey County, IN sits in the top tenth nationally on this measure.
Why turnout in Posey County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Posey County is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 65%, about 5 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 83% of households in Posey County own their home, above 91% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Vanderburgh County, IN R+9
- Henderson County, KY R+33
- White County, IL R+59
- Gibson County, IN R+49
- Warrick County, IN R+33
- Union County, KY R+56
- Gallatin County, IL R+60
- Wabash County, IL R+51
- Edwards County, IL R+64
- Webster County, KY R+58
Counties with Similar Populations
- Barbour County, AL R+3
- Macon County, TN R+68
- Iosco County, MI R+28
- Todd County, MN R+50
- Lyon County, MN R+28
- Lauderdale County, TN R+23
- Adair County, MO R+21
- Washington County, FL R+61
- Fannin County, GA R+62
- Hardee County, FL R+46
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Indiana Secretary of State, Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.