80138 leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 91% of adults in 80138 typically vote, above the U.S. average of about 62%. Among adults in 80138, ~38% vote Democratic, ~53% Republican, and ~9% don't vote. The map below shows estimated turnout by block group.
How 80138 compares
Among zip codes within 15 miles, 80138 leans more Republican than 20 of 22 neighbors.
80138 runs about 28 points more Republican than Colorado as a whole. Colorado leans Democratic overall, while 80138 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 80138. The southeast side is the most Republican-leaning (R+38) and the west side is the least Republican-leaning (R+4), a spread of about 34 points.
Why 80138 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 80138, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 83% of households in 80138 are family households, about 16 points above the U.S. average of 67%. Dense places usually vote Democratic, but 80138 runs against that pattern. 80138 runs against the grain of Colorado, a Republican-leaning pocket in a Democratic-leaning state.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 80138, CO sits in the top tenth 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 80138 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 80138 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 73%, about 13 points above the U.S. average of 60%. 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.