Green River is a Republican stronghold. About 25% of voters here vote Democratic and 75% Republican.
About 72% of adults in Green River typically vote, above the U.S. average of about 62%. Among adults in Green River, ~18% vote Democratic, ~54% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Green River compares
Among cities within 25 miles, Green River is the least Republican-leaning.
Green River runs about 5 points more Republican than Wyoming as a whole.
Politics vary noticeably by neighborhood within Green River. The southwest side is the most Republican-leaning (R+79) and the southeast side is the least Republican-leaning (R+38), a spread of about 41 points.
Why Green River 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 Green River, not a ranked or complete list of what matters most.
Green River votes Republican even though it is densely developed (about 62%, 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; Green River, WY sits in the top tenth nationally on this measure.
Why turnout in Green River looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Green River 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 Cities
- James Town, WY R+66
- Quealy, WY R+62
- Blairtown, WY R+56
- Rock Springs, WY R+51
- North Rock Springs, WY R+68
- Reliance, WY R+68
- Verne, WY R+69
Cities with Similar Populations
- Ellisville, MS R+51
- Augusta, KS R+42
- Manchester, MD R+36
- Chipley, FL R+60
- Isanti, MN R+31
- Marengo, IL R+23
- Flanders, NJ R+6
- Platte City, MO R+19
- North Merrick, NY R+19
- Glendale, WI D+47
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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.