81434 leans slightly Democratic by roughly 14 points: about 57% of voters vote Democratic and 43% Republican.
About 69% of adults in 81434 typically vote, above the U.S. average of about 62%. Among adults in 81434, ~39% vote Democratic, ~30% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How 81434 compares
Politically, 81434 sits close to the rest of Colorado.
Why 81434 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 81434, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 56% of adults in 81434 hold a bachelor's degree, about 27 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 34% of adults in 81434 have never been married, above 77% of zip codes.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; 81434, CO sits in the top quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 81434 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 81434 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 70%, about 10 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in 81434 have completed high school, above 94% of zip codes. 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.