Colorado University is a Democratic stronghold. About 81% of voters here vote Democratic and 19% Republican.
About 50% of adults in Colorado University typically vote, below the U.S. average of about 62%. Among adults in Colorado University, ~41% vote Democratic, ~9% Republican, and ~50% don't vote. The map below shows estimated turnout by block group.
How Colorado University compares
Among neighborhoods within 5 miles, Colorado University leans more Democratic than 1 of 8 neighbors.
Colorado University runs about 51 points more Democratic than Colorado as a whole.
Politics vary noticeably by block within Colorado University. The northwest side is the most Democratic-leaning (D+71) and the south side is the least Democratic-leaning (D+56), a spread of about 15 points.
Why Colorado University leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Colorado University, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 85% of adults in Colorado University hold a bachelor's degree, about 56 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 90% of adults in Colorado University have never been married, in the top fraction of neighborhoods.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Colorado University, Boulder, CO sits in the top tenth nationally on this measure.
Why turnout in Colorado University looks the way it does
Renters vote less often than owners. About 72% of households in Colorado University rent, about 47 points above the U.S. average of 25%. Low high-school completion lines up with lower turnout, and more than 99% of adults in Colorado University have completed high school, above 94% of neighborhoods. High-crime urban areas turn out at lower rates, and Colorado University sits in the top 15% on a violent-crime measure. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Central Boulder, Boulder, CO D+71
- Southeast Boulder, Boulder, CO D+69
- Washington Village, Boulder, CO D+77
- Crossroads, Boulder, CO D+73
- South Boulder, Boulder, CO D+76
- East Boulder, Boulder, CO D+61
- Palo Park, Boulder, CO D+64
- North Boulder, Boulder, CO D+72
- Walnut Grove, Broomfield, CO D+15
- Brandywine, Broomfield, CO D+24
Neighborhoods with Similar Populations
- Jamestown, Hephzibah, GA D+71
- Eastmoor, Columbus, OH D+56
- Buckeye-Shaker, Cleveland, OH D+83
- Beechfielf-Irvington Area, Baltimore, MD D+83
- Black Forest, Colorado Springs, CO R+34
- Sugerloaf, San Mateo, CA D+50
- Downtown Cleveland, Cleveland, OH D+58
- Forest Glen, Chicago, IL D+25
- Flatbush-Ditmas Park, Brooklyn, NY D+84
- Scotlandville, Baton Rouge, LA D+84
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.