80204 is a Democratic stronghold. About 77% of voters here vote Democratic and 23% Republican.
About 61% of adults in 80204 typically vote, near the U.S. average of about 62%. Among adults in 80204, ~47% vote Democratic, ~14% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How 80204 compares
Among zip codes within 15 miles, 80204 leans more Democratic than 64 of 78 neighbors.
80204 runs about 44 points more Democratic than Colorado as a whole.
Politics vary noticeably by block within 80204. The southeast side is the most Democratic-leaning (D+66) and the southwest side is the least Democratic-leaning (D+48), a spread of about 19 points.
Why 80204 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 80204, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 80204 live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 80204 sits in the top quarter (about 49%, above 89% of zip codes). A high never-married share predicts Democratic voting, and about 53% of adults in 80204 have never been married, above 96% of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 80204, CO sits in the top tenth 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 80204 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 80204 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 61% of households in 80204 rent, about 36 points above the U.S. average of 25%. High-crime urban areas turn out at lower rates, and 80204 sits in the top 15% on a violent-crime measure. 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.