81223 leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 76% of adults in 81223 typically vote, above the U.S. average of about 62%. Among adults in 81223, ~24% vote Democratic, ~53% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How 81223 compares
81223 sits in a sparsely populated area with few comparable zip codes nearby.
81223 runs about 49 points more Republican than Colorado as a whole. Colorado leans Democratic overall, while 81223 is one of the few Republican-leaning pockets.
Why 81223 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 81223, not a ranked or complete list of what matters most.
81223 votes against the grain of Colorado. Colorado leans Democratic overall, while 81223 runs about 49 points more Republican. Rural areas with a high white share vote Republican. Non-Hispanic white share in 81223 is about 94%, well above similar-sized zip codes (around 76%).
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 81223, CO sits in the bottom 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 81223 looks the way it does
Homeowners vote more often than renters. About 92% of households in 81223 own their home, about 18 points above the Colorado average of 75%. 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.