80420 leans slightly Democratic by roughly 14 points: about 57% of voters vote Democratic and 43% Republican.
About 81% of adults in 80420 typically vote, above the U.S. average of about 62%. Among adults in 80420, ~46% vote Democratic, ~35% Republican, and ~19% don't vote. The map below shows estimated turnout by block group.
How 80420 compares
Among zip codes within 15 miles, 80420 leans more Democratic than 1 of 3 neighbors.
Politically, 80420 sits close to the rest of Colorado.
Why 80420 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 80420, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 52% of adults in 80420 hold a bachelor's degree, about 23 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 33% of adults in 80420 have never been married, above 75% of zip codes.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; 80420, CO sits in the top tenth nationally on this measure.
Why turnout in 80420 looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in 80420 have completed high school, about 8 points above the U.S. average of 90%. 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.