Browns Valley leans Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 79% of adults in Browns Valley typically vote, above the U.S. average of about 62%. Among adults in Browns Valley, ~51% vote Democratic, ~28% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How Browns Valley compares
Among neighborhoods within 5 miles, Browns Valley leans more Democratic than 2 of 6 neighbors.
Browns Valley runs about 9 points more Democratic than California as a whole.
Politics vary noticeably by block within Browns Valley. The northwest side is the most Democratic-leaning (D+40) and the east side is the least Democratic-leaning (D+27), a spread of about 13 points.
Why Browns Valley leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Browns Valley. The lean here lands roughly where demographic data alone would predict.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Browns Valley, Napa, 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 Browns Valley looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Browns Valley 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%. Homeowners vote more often than renters, and about 89% of households in Browns Valley own their home, compared to around 58% in nearby neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Linda Vista-San Francisco, Napa, CA D+24
- Vintage, Napa, CA D+28
- Westwood-San Francisco, Napa, CA D+35
- Beard, Napa, CA D+37
- Central Napa, Napa, CA D+39
- Terrace-Shurtleff, Napa, CA D+36
- Flosden, Vallejo, CA D+26
- Chabot Terrace, Vallejo, CA D+48
- Harry Floyd Terrace, Vallejo, CA D+42
- East Petaluma, Petaluma, CA D+58
Neighborhoods with Similar Populations
- Downtown, Allentown, PA D+38
- Rockwood, Spokane, WA D+48
- Stone Bridge, Fargo, ND Even
- Florida Shores, Edgewater, FL R+34
- Terrell Heights, San Antonio, TX D+11
- Eastlake Trails, Chula Vista, CA D+15
- Shackelford, Modesto, CA D+18
- Five Points, Detroit, MI D+74
- The Meadows, Sarasota, FL R+7
- Wells-Goodfellow, St. Louis, MO D+86
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.