Aspen, CO Political Map | Democrat & Republican Areas in Aspen

By the BestNeighborhood data science team. Last updated May 2026.

Aspen leans heavily Democratic by roughly 50 points: about 75% of voters vote Democratic and 25% Republican.

 

About 93% of adults in Aspen typically vote, above the U.S. average of about 62%. Among adults in Aspen, ~70% vote Democratic, ~23% Republican, and ~7% don't vote. The map below shows estimated turnout by block group.

How Aspen compares

Among cities within 25 miles, Aspen leans more Democratic than 13 of 15 neighbors.

Aspen runs about 39 points more Democratic than Colorado as a whole.

Politics vary noticeably by neighborhood within Aspen. The west side is the most Democratic-leaning (D+59) and the northwest side is the least Democratic-leaning (D+35), a spread of about 24 points.

Why Aspen 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 Aspen, not a ranked or complete list of what matters most.

Areas with high college attainment vote Democratic. About 68% of adults in Aspen hold a bachelor's degree, about 39 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 35% of adults in Aspen have never been married, above 87% of cities.

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Aspen, CO sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Aspen looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Aspen 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 72%, about 12 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Aspen have completed high school, above 94% of cities. Learn more about the findings and methodology on the political spectrum map.

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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.