81125 is a true toss-up. About 49% of voters here vote Democratic and 51% Republican.
About 82% of adults in 81125 typically vote, above the U.S. average of about 62%. Among adults in 81125, ~40% vote Democratic, ~42% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.
How 81125 compares
Among zip codes within 15 miles, 81125 sits roughly in the middle of the political spectrum, with 0 neighbors leaning further in the place's direction and 3 leaning the other way.
81125 runs about 12 points more Republican than Colorado as a whole. Colorado leans Democratic overall, while 81125 sits closer to the political middle.
Politics vary noticeably by block within 81125. The west side runs the most Democratic (D+10) and the southeast side runs the most Republican (R+54), a spread of about 64 points.
Why 81125 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 81125, not a ranked or complete list of what matters most.
81125 votes against the grain of Colorado. Colorado leans Democratic overall, while 81125 runs about 12 points more Republican.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 81125, CO sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 81125 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 81125 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The uninsured rate here is about 23%, about 12 points above the Colorado average of 11%. 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.