Brentwood, Jacksonville, FL Political Map | Democrat & Republican Areas in Brentwood

By the BestNeighborhood data science team. Last updated May 2026.

Brentwood is a Democratic stronghold. About 88% of voters here vote Democratic and 12% Republican.

 

About 57% of adults in Brentwood typically vote, near the U.S. average of about 62%. Among adults in Brentwood, ~50% vote Democratic, ~7% Republican, and ~43% 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 18 of 24 neighbors.

Brentwood runs about 89 points more Democratic than Florida as a whole. Florida leans Republican overall, while Brentwood is one of the few Democratic-leaning pockets.

Politics vary noticeably by block within Brentwood. The southwest side is the most Democratic-leaning (D+82) and the northeast side is the least Democratic-leaning (D+63), a spread of about 18 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.

Brentwood votes against the grain of Florida. Florida leans Republican overall, while Brentwood runs about 89 points more Democratic. A high never-married share predicts Democratic voting, and about 53% of adults in Brentwood have never been married, above 86% of neighborhoods.

Preventive-care access and voter turnout

Places with limited routine preventive-care access tend to turn out at a lower rate; Brentwood, Jacksonville, FL sits in the bottom 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 Brentwood looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Brentwood is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 34%, about 23 points below the Florida average of 56%. Renters vote less often than owners, and about 67% of households in Brentwood rent, about 42 points above the U.S. average of 25%. High-crime urban areas turn out at lower rates, and Brentwood sits in the top 15% on a violent-crime measure. Learn more about the findings and methodology on the political spectrum map.

Sources and methodology

Precinct-level voting records used to fit the model come from Florida Division of 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.