Grant County leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 62% of adults in Grant County typically vote, near the U.S. average of about 62%. Among adults in Grant County, ~20% vote Democratic, ~42% Republican, and ~38% don't vote. The map below shows estimated turnout by block group.
How Grant County compares
Among counties within 50 miles, Grant County leans more Republican than 5 of 19 neighbors.
Grant County runs about 15 points more Republican than Indiana as a whole.
Politics vary noticeably by city within Grant County. The southwest side is the most Republican-leaning (R+59) and the north side is the least Republican-leaning (R+27), a spread of about 32 points.
Why Grant 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 Grant County, not a ranked or complete list of what matters most.
Grant County votes Republican even though it is densely developed (about 55%, far above the Indiana average of 25%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Grant County, IN sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Grant County looks the way it does
Turnout in Grant County sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Blackford County, IN R+49
- Wabash County, IN R+48
- Huntington County, IN R+45
- Delaware County, IN R+11
- Howard County, IN R+30
- Tipton County, IN R+52
- Miami County, IN R+45
- Madison County, IN R+25
- Wells County, IN R+56
- Jay County, IN R+58
Counties with Similar Populations
- Montcalm County, MI R+41
- Wayne County, IN R+31
- Ionia County, MI R+30
- Belmont County, OH R+45
- St. Francois County, MO R+48
- Muskogee County, OK R+29
- Chippewa County, WI R+24
- Rice County, MN Even
- Aroostook County, ME R+30
- Williamson County, IL R+36
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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.