Brentwood leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 78% of adults in Brentwood typically vote, above the U.S. average of about 62%. Among adults in Brentwood, ~50% vote Democratic, ~28% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How Brentwood compares
Among neighborhoods within 5 miles, Brentwood leans more Democratic than 1 of 6 neighbors.
Brentwood runs about 7 points more Democratic than California as a whole.
Politics vary noticeably by block within Brentwood. The east side is the most Democratic-leaning (D+40) and the northwest side is the least Democratic-leaning (D+10), a spread of about 30 points.
Why Brentwood 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 Brentwood, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 79% of adults in Brentwood hold a bachelor's degree, about 51 points above the U.S. average of 28%.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Brentwood, Los Angeles, CA sits in the top quarter nationally on this measure.
Why turnout in Brentwood looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Brentwood 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 78%, about 18 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Brentwood have completed high school, above 84% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Sawtelle, Los Angeles, CA D+50
- Westwood, Los Angeles, CA D+50
- Bel Air, Los Angeles, CA D+20
- Century City, Los Angeles, CA D+42
- West Los Angeles, Los Angeles, CA D+40
- Mar Vista, Los Angeles, CA D+49
- Palms, Los Angeles, CA D+56
- Clarkdale, Culver City, CA D+38
- Playa Vista, Los Angeles, CA D+46
- Pico-Robertson, Los Angeles, CA D+59
Neighborhoods with Similar Populations
- Prospect Hill, San Antonio, TX D+39
- Battle Creek, St. Paul, MN D+39
- Upper Roseville, Newark, NJ D+23
- Mid City North, Baton Rouge, LA D+84
- West Park, Irvine, CA D+14
- Springlake-University Terrace, Shreveport, LA R+12
- Campello, Brockton, MA D+41
- Midland Beach, Staten Island, NY R+33
- South Baton Rouge, Baton Rouge, LA D+12
- Northampton, Hampton, VA D+35
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.