Hamilton County is a Republican stronghold. About 15% of voters here vote Democratic and 85% Republican.
About 36% of adults in Hamilton County typically vote, below the U.S. average of about 62%. Among adults in Hamilton County, ~5% vote Democratic, ~31% Republican, and ~64% don't vote. The map below shows estimated turnout by block group.
How Hamilton County compares
Among counties within 50 miles, Hamilton County leans more Republican than 6 of 7 neighbors.
Hamilton County runs about 55 points more Republican than Kansas as a whole.
Why Hamilton 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 Hamilton County, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 74% of households in Hamilton County are family households, about 8 points above the U.S. average of 67%.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Hamilton County, KS sits in the bottom tenth 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 Hamilton County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Hamilton County is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Crowded housing lines up with lower turnout, and about 6% of homes in Hamilton County have more than one occupant per room, above 96% of counties. Low high-school completion lines up with lower turnout, and about 80% of adults in Hamilton County have completed high school, below 94% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Kearny County, KS R+71
- Stanton County, KS R+48
- Greeley County, KS R+68
- Grant County, KS R+59
- Wichita County, KS R+59
- Prowers County, CO R+38
- Finney County, KS R+25
- Scott County, KS R+67
- Haskell County, KS R+66
- Baca County, CO R+69
Counties with Similar Populations
- Frontier County, NE R+74
- Rich County, UT R+66
- McIntosh County, ND R+61
- Pawnee County, NE R+61
- Hettinger County, ND R+69
- Cochran County, TX R+47
- Harmon County, OK R+53
- Wayne County, UT R+64
- Elk County, KS R+68
- Rawlins County, KS R+73
Sources and methodology
Precinct-level voting records used to fit the model come from Kansas 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.