North Boulder is a Democratic stronghold. About 86% of voters here vote Democratic and 14% Republican.
About 92% of adults in North Boulder typically vote, above the U.S. average of about 62%. Among adults in North Boulder, ~79% vote Democratic, ~13% Republican, and ~8% don't vote. The map below shows estimated turnout by block group.
How North Boulder compares
Among neighborhoods within 5 miles, North Boulder leans more Democratic than 5 of 8 neighbors.
North Boulder runs about 61 points more Democratic than Colorado as a whole.
Politics vary noticeably by block within North Boulder. The south side is the most Democratic-leaning (D+78) and the northwest side is the least Democratic-leaning (D+57), a spread of about 21 points.
Why North Boulder 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 North Boulder, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 73% of adults in North Boulder hold a bachelor's degree, about 45 points above the U.S. average of 28%.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; North Boulder, Boulder, CO sits above the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in North Boulder looks the way it does
Areas with strong routine healthcare access turn out at higher rates. North Boulder 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 74%, about 14 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Palo Park, Boulder, CO D+64
- Washington Village, Boulder, CO D+77
- Crossroads, Boulder, CO D+73
- Central Boulder, Boulder, CO D+71
- East Boulder, Boulder, CO D+61
- Colorado University, Boulder, CO D+62
- Southeast Boulder, Boulder, CO D+69
- South Boulder, Boulder, CO D+76
- Walnut Grove, Broomfield, CO D+15
- Brandywine, Broomfield, CO D+24
Neighborhoods with Similar Populations
- Shaw, Washington, DC D+84
- North Berkeley, Berkeley, CA D+82
- Rock Creek, Clackamas, OR D+10
- Bradford, Haverhill, MA D+9
- North Hyde Park, Tampa, FL D+12
- Valley View, Henderson, NV D+3
- The Fan, Richmond, VA D+65
- Southern Highlands, Enterprise, NV R+5
- Bridle Trails, Bellevue, WA D+46
- Washington Park, Denver, CO D+61
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.