Sweetwater County is a Republican stronghold. About 24% of voters here vote Democratic and 76% Republican.
About 69% of adults in Sweetwater County typically vote, above the U.S. average of about 62%. Among adults in Sweetwater County, ~17% vote Democratic, ~52% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How Sweetwater County compares
Sweetwater County runs about 7 points more Republican than Wyoming as a whole.
Politics vary noticeably by city within Sweetwater County. The north side is the most Republican-leaning (R+73) and the south side is the least Republican-leaning (R+45), a spread of about 27 points.
Why Sweetwater 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 Sweetwater County, not a ranked or complete list of what matters most.
Sweetwater County votes Republican even though it is densely developed (about 54%, far above the Wyoming average of 12%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Sweetwater County, WY sits in the top quarter nationally on this measure.
Why turnout in Sweetwater County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Sweetwater County is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Daggett County, UT R+59
- Uinta County, WY R+62
- Uintah County, UT R+67
- Sublette County, WY R+58
- Duchesne County, UT R+76
- Rich County, UT R+66
- Fremont County, WY R+32
- Lincoln County, WY R+66
- Moffat County, CO R+52
- Carbon County, WY R+57
Counties with Similar Populations
- Pierce County, WI R+19
- Summit County, UT D+10
- Butler County, MO R+52
- Ohio County, WV R+20
- Okanogan County, WA R+16
- Nez Perce County, ID R+35
- St. John the Baptist Parish, LA D+27
- Crawford County, OH R+51
- Clinton County, OH R+53
- Mercer County, OH R+65
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.