Marietta leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 72% of adults in Marietta typically vote, above the U.S. average of about 62%. Among adults in Marietta, ~20% vote Democratic, ~52% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Marietta compares
Among neighborhoods within 5 miles, Marietta is the most Republican-leaning.
Marietta runs about 30 points more Republican than Florida as a whole.
Politics vary noticeably by block within Marietta. The northwest side is the most Republican-leaning (R+50) and the southwest side is the least Republican-leaning (R+32), a spread of about 18 points.
Why Marietta 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 Marietta, not a ranked or complete list of what matters most.
Rural areas vote Republican, and Marietta sits in the bottom quarter on developed land relative to similar places. A high family-household share predicts Republican voting, and about 79% of households in Marietta are family households, above 84% of neighborhoods.
Population density and Republican lean
Places with low population density tend to lean Republican; Marietta, Jacksonville, FL sits in the bottom tenth nationally on this measure.
Why turnout in Marietta looks the way it does
Homeowners vote more often than renters. About 86% of households in Marietta own their home, about 15 points above the Florida average of 71%. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Rolling Hills, Jacksonville, FL R+20
- Whitehouse, Jacksonville, FL R+34
- Normandy Estates, Jacksonville, FL Even
- Crystal Springs, Jacksonville, FL R+3
- Normandy Manor, Jacksonville, FL D+3
- Hyde Park, Jacksonville, FL D+31
- Hillcrest, Jacksonville, FL D+24
- Woodstock, Jacksonville, FL D+56
- Herlong, Jacksonville, FL D+22
- Murray Hill, Jacksonville, FL D+10
Neighborhoods with Similar Populations
- Centerville, Brownsville, PA R+34
- East Old Golden Road, West Pleasant View, CO D+21
- Wilson Park, Milwaukee, WI D+17
- Marysville Historic District, Marysville, OH R+21
- Holualoa, Kailua-Kona, HI D+21
- Golden Valley, Milwaukee, WI D+41
- Hunter Army Airfield, Savannah, GA D+4
- Mountainville, Allentown, PA D+12
- Sierra Linda, Oxnard, CA D+31
- Westmore, Orem, UT R+18
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.