Diamond Heights is a Democratic stronghold. About 85% of voters here vote Democratic and 15% Republican.
About 72% of adults in Diamond Heights typically vote, above the U.S. average of about 62%. Among adults in Diamond Heights, ~61% vote Democratic, ~11% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Diamond Heights compares
Among neighborhoods within 5 miles, Diamond Heights leans more Democratic than 35 of 48 neighbors.
Diamond Heights runs about 50 points more Democratic than California as a whole.
Politics vary noticeably by block within Diamond Heights. The northeast side is the most Democratic-leaning (D+87) and the west side is the least Democratic-leaning (D+65), a spread of about 22 points.
Why Diamond Heights 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 Diamond Heights, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 76% of adults in Diamond Heights hold a bachelor's degree, about 48 points above the U.S. average of 28%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Diamond Heights, San Francisco, CA sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Diamond Heights looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Diamond Heights 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 76%, about 16 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 99% of adults in Diamond Heights have completed high school, above 89% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Noe Valley, San Francisco, CA D+82
- Glen Park, San Francisco, CA D+79
- Twin Peaks, San Francisco, CA D+67
- Castro-Upper Market, San Francisco, CA D+82
- West of Twin Peaks, San Francisco, CA D+62
- Liberty Street Historic District, San Francisco, CA D+81
- St Marys Park, San Francisco, CA D+53
- Bernal Heights, San Francisco, CA D+78
- Cole Valley, San Francisco, CA D+82
- Duboce Triangle, San Francisco, CA D+83
Neighborhoods with Similar Populations
- Rogers Park, Fort Collins, CO D+46
- Waters, Lubbock, TX R+25
- Northeast Heights, Wichita, KS D+48
- Park West, San Diego, CA D+54
- North Lake Waco, Waco, TX R+54
- Bakersville, Manchester, NH D+21
- Lake Ridge, Fort Lauderdale, FL D+17
- Plaza-Shamrock, Charlotte, NC D+68
- Moncrief Park, Jacksonville, FL D+82
- Poncey-Highland, Atlanta, GA D+67
Sources and methodology
Precinct-level voting records used to fit the model come from California 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.