South Pass City leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 52% of adults in South Pass City typically vote, below the U.S. average of about 62%. Among adults in South Pass City, ~14% vote Democratic, ~38% Republican, and ~48% don't vote. The map below shows estimated turnout by block group.
How South Pass City compares
South Pass City sits in a sparsely populated area with few comparable cities nearby.
Politically, South Pass City sits close to the rest of Wyoming.
Politics vary noticeably by neighborhood within South Pass City. The southwest side is the most Republican-leaning (R+56) and the east side is the least Republican-leaning (R+37), a spread of about 19 points.
Why South Pass City leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for South Pass City, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. South Pass City sits in the bottom quarter on density and about 96% of residents are non-Hispanic white, about 11 points above the Wyoming average of 85%.
Developed land and Republican lean
Places with a rural land-use pattern tend to lean Republican; South Pass City, WY sits in the bottom tenth nationally on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.
Why turnout in South Pass City looks the way it does
Turnout in South Pass City 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 Cities
- Milford, WY R+30
- Lander, WY R+24
- Wind River, WY D+38
- Hudson, WY R+61
- Fort Washakie, WY D+45
- Boulder, WY R+58
- Farson, WY R+73
- Ethete, WY D+13
- Eden, WY R+73
- Arapahoe, WY D+20
Cities with Similar Populations
- Henrietta, WV R+68
- Bodman, IL R+51
- Blue Rock, WV R+67
- Longdale, WV R+62
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.