81435 is a Democratic stronghold. About 75% of voters here vote Democratic and 25% Republican.
About 97% of adults in 81435 typically vote, above the U.S. average of about 62%. Among adults in 81435, ~73% vote Democratic, ~24% Republican, and ~3% don't vote. The map below shows estimated turnout by block group.
How 81435 compares
Among zip codes within 15 miles, 81435 leans more Democratic than 2 of 4 neighbors.
81435 runs about 39 points more Democratic than Colorado as a whole.
Politics vary noticeably by block within 81435. The northwest side is the most Democratic-leaning (D+58) and the south side is the least Democratic-leaning (D+42), a spread of about 16 points.
Why 81435 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 81435, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 75% of adults in 81435 hold a bachelor's degree, about 46 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 35% of adults in 81435 have never been married, above 78% of zip codes.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 81435, CO sits in the top quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 81435 looks the way it does
Areas with high high-school completion turn out at higher rates. About 99% of adults in 81435 have completed high school, about 6 points above the Colorado average of 93%. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.