81328 is a true toss-up. About 48% of voters here vote Democratic and 52% Republican.
About 76% of adults in 81328 typically vote, above the U.S. average of about 62%. Among adults in 81328, ~36% vote Democratic, ~40% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How 81328 compares
81328 sits in a sparsely populated area with few comparable zip codes nearby.
81328 runs about 16 points more Republican than Colorado as a whole. Colorado leans Democratic overall, while 81328 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 81328. The southeast side runs the most Democratic (D+9) and the northwest side runs the most Republican (R+32), a spread of about 41 points.
Why 81328 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 81328, not a ranked or complete list of what matters most.
81328 votes against the grain of Colorado. Colorado leans Democratic overall, while 81328 runs about 16 points more Republican.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 81328, 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 81328 looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in 81328 have completed high school, about 6 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.