Big Horn County is a Republican stronghold. About 14% of voters here vote Democratic and 86% Republican.
About 70% of adults in Big Horn County typically vote, above the U.S. average of about 62%. Among adults in Big Horn County, ~10% vote Democratic, ~60% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Big Horn County compares
Big Horn County sits in a sparsely populated area with few comparable counties nearby.
Big Horn County runs about 27 points more Republican than Wyoming as a whole.
Why Big Horn County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Big Horn County. The lean here lands roughly where demographic data alone would predict.
Population density and Republican lean
Places with low population density tend to lean Republican; Big Horn County, WY sits below the national average on this measure.
Why turnout in Big Horn County looks the way it does
Turnout in Big Horn 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
- Park County, WY R+51
- Washakie County, WY R+64
- Carbon County, MT R+38
- Sheridan County, WY R+47
- Hot Springs County, WY R+57
- Big Horn County, MT Even
- Johnson County, WY R+60
- Yellowstone County, MT R+25
- Stillwater County, MT R+57
- Fremont County, WY R+32
Counties with Similar Populations
- Cottonwood County, MN R+46
- Charlotte County, VA R+31
- Perry County, MS R+58
- Rio Grande County, CO R+22
- Richland County, MT R+62
- Haskell County, OK R+69
- Sierra County, NM R+17
- Douglas County, MO R+70
- Red River County, TX R+51
- Fergus County, MT R+50
Sources and methodology
Precinct-level voting records used to fit the model come from Wyoming 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.