Dillon leans Democratic by roughly 24 points: about 62% of voters vote Democratic and 38% Republican.
About 91% of adults in Dillon typically vote, above the U.S. average of about 62%. Among adults in Dillon, ~56% vote Democratic, ~35% Republican, and ~9% don't vote. The map below shows estimated turnout by block group.
How Dillon compares
Among cities within 25 miles, Dillon leans more Democratic than 13 of 19 neighbors.
Dillon runs about 12 points more Democratic than Colorado as a whole.
Why Dillon 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 Dillon, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 51% of residents in Dillon live in densely developed areas, about 14 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Dillon sits in the top quarter (about 51%, above 94% of cities). A high never-married share predicts Democratic voting, and about 48% of adults in Dillon have never been married, above 97% of cities.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Dillon, CO sits in the top quarter 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 Dillon looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in Dillon have completed high school, about 7 points above the U.S. average of 90%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Keystone, CO D+22
- Silverthorne, CO D+24
- Frisco, CO D+21
- Breckenridge, CO D+24
- Montezuma, CO D+19
- Blue River, CO D+18
- Silver Plume, CO D+19
- Vail, CO D+32
- Georgetown, CO D+19
- Red Cliff, CO D+38
Cities with Similar Populations
- Millersburg, PA R+43
- Plymouth, NH D+33
- Tilton, NH R+11
- Hortonville, WI R+39
- Sophia, NC R+63
- Parkesburg, PA R+9
- Helendale, CA R+29
- Heyburn, ID R+57
- Montrose, MI R+26
- Calumet Park, IL D+81
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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.