80904 leans Democratic by roughly 16 points: about 58% of voters vote Democratic and 42% Republican.
About 80% of adults in 80904 typically vote, above the U.S. average of about 62%. Among adults in 80904, ~46% vote Democratic, ~34% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How 80904 compares
Among zip codes within 15 miles, 80904 leans more Democratic than 31 of 33 neighbors.
80904 runs about 6 points more Democratic than Colorado as a whole.
Politics vary noticeably by block within 80904. The southeast side is the most Democratic-leaning (D+36) and the north side is the least Democratic-leaning (D+6), a spread of about 31 points.
Why 80904 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 80904, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 90% of residents in 80904 live in densely developed areas, about 53 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 80904 sits in the top quarter (about 47%, above 87% of zip codes).
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; 80904, CO sits in the top tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 80904 looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in 80904 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 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.