East Petaluma is a Democratic stronghold. About 79% of voters here vote Democratic and 21% Republican.
About 66% of adults in East Petaluma typically vote, near the U.S. average of about 62%. Among adults in East Petaluma, ~52% vote Democratic, ~14% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How East Petaluma compares
East Petaluma runs about 37 points more Democratic than California as a whole.
Politics vary noticeably by block within East Petaluma. The south side is the most Democratic-leaning (D+65) and the northwest side is the least Democratic-leaning (D+51), a spread of about 14 points.
Why East Petaluma leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in East Petaluma. The lean here lands roughly where demographic data alone would predict.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; East Petaluma, Petaluma, CA 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 East Petaluma looks the way it does
Turnout in East Petaluma sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- SouthWest Santa Rosa, Santa Rosa, CA D+40
- Wright Area, Santa Rosa, CA D+29
- Junior College Neighborhood Assc., Santa Rosa, CA D+62
- Marinwood, San Rafael, CA D+42
- Terra Linda, San Rafael, CA D+43
- Browns Valley, Napa, CA D+30
- Northgate, San Rafael, CA D+41
- Coffey Park, Santa Rosa, CA D+35
- Linda Vista-San Francisco, Napa, CA D+24
- Westwood-San Francisco, Napa, CA D+35
Neighborhoods with Similar Populations
- Gert Town, New Orleans, LA D+79
- Providence, Scranton, PA D+10
- Read Blvd West, New Orleans, LA D+87
- Cypress, Oxnard, CA D+29
- Southside Slopes, Pittsburgh, PA D+42
- Sunset, Fort Lauderdale, FL D+14
- Lincoln Park, Yonkers, NY D+6
- Canfield Manor, Mount Clemens, MI D+15
- Bunker Hill, Pottsville, PA R+13
- Wake Forest University, Winston-Salem, NC D+46
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.