Healdsburg is a Democratic stronghold. About 76% of voters here vote Democratic and 24% Republican.
About 73% of adults in Healdsburg typically vote, above the U.S. average of about 62%. Among adults in Healdsburg, ~55% vote Democratic, ~18% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.
How Healdsburg compares
Among cities within 25 miles, Healdsburg leans more Democratic than 38 of 46 neighbors.
Healdsburg runs about 31 points more Democratic than California as a whole.
Politics vary noticeably by neighborhood within Healdsburg. The east side is the most Democratic-leaning (D+53) and the southeast side is the least Democratic-leaning (D+39), a spread of about 14 points.
Why Healdsburg leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Healdsburg, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 71% of residents in Healdsburg live in densely developed areas, about 35 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Healdsburg sits in the top quarter (about 43%, above 89% of cities).
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Healdsburg, CA sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Healdsburg looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Healdsburg 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 69%, about 9 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Jimtown, CA D+44
- Lytton, CA D+32
- Windsor, CA D+30
- Geyserville, CA D+36
- Rio Nido, CA D+45
- Las Lomas, CA D+46
- Forestville, CA D+53
- Fulton, CA D+28
- Guerneville, CA D+53
- Kellog, CA D+25
Cities with Similar Populations
- Benton, KY R+56
- Platteville, WI Even
- Wood Dale, IL R+6
- Seven Oaks, SC D+12
- Tuscumbia, AL R+52
- Hampstead, MD R+29
- Spring Lake, MI R+8
- Silverton, OR R+14
- Thonotosassa, FL R+9
- Callahan, FL R+64
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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.