Larimer County leans Democratic by roughly 16 points: about 58% of voters vote Democratic and 42% Republican.
About 82% of adults in Larimer County typically vote, above the U.S. average of about 62%. Among adults in Larimer County, ~48% vote Democratic, ~34% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.
How Larimer County compares
Among counties within 50 miles, Larimer County leans more Democratic than 4 of 6 neighbors.
Larimer County runs about 5 points more Democratic than Colorado as a whole.
Politics vary noticeably by city within Larimer County. The north side runs the most Democratic (D+42) and the southeast side runs the most Republican (R+5), a spread of about 47 points.
Why Larimer 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 Larimer County, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 54% of adults in Larimer County hold a bachelor's degree, about 25 points above the U.S. average of 28%. Dense areas vote Democratic, and Larimer County sits in the top fifth on density (about 69%, above 90% of counties). A high never-married share predicts Democratic voting, and about 34% of adults in Larimer County have never been married, above 81% of counties.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Larimer County, CO sits in the top 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 Larimer County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Larimer County is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 66%, about 6 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Larimer County have completed high school, above 97% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Weld County, CO R+17
- Boulder County, CO D+52
- Broomfield County, CO D+25
- Adams County, CO D+11
- Laramie County, WY R+23
- Gilpin County, CO D+16
- Jefferson County, CO D+18
- Denver County, CO D+53
- Grand County, CO R+6
- Clear Creek County, CO D+21
Counties with Similar Populations
- Douglas County, CO R+7
- Davis County, UT R+24
- Westmoreland County, PA R+26
- Anoka County, MN Even
- Chesterfield County, VA D+12
- Nueces County, TX R+4
- Hamilton County, TN R+10
- Horry County, SC R+30
- Galveston County, TX R+13
- Bell County, TX R+3
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Sources and methodology
Precinct-level voting records used to fit the model come from Colorado 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.