Cobb County leans Democratic by roughly 20 points: about 60% of voters vote Democratic and 40% Republican.
About 76% of adults in Cobb County typically vote, above the U.S. average of about 62%. Among adults in Cobb County, ~46% vote Democratic, ~30% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How Cobb County compares
Among counties within 50 miles, Cobb County leans more Democratic than 18 of 25 neighbors.
Cobb County runs about 22 points more Democratic than Georgia as a whole. Georgia is roughly evenly split, and Cobb County sits clearly on the Democratic side.
Politics vary noticeably by city within Cobb County. The southwest side runs the most Democratic (D+49) and the northeast side runs the most Republican (R+8), a spread of about 57 points.
Why Cobb County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Cobb County, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 86% of residents in Cobb County live in densely developed areas, about 49 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Cobb County sits in the top quarter (about 50%, above 97% of counties). A high never-married share predicts Democratic voting, and about 34% of adults in Cobb County have never been married, above 82% of counties.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Cobb County, GA sits in the top tenth nationally on this measure.
Why turnout in Cobb County looks the way it does
Turnout in Cobb County 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 Counties
- Fulton County, GA D+46
- Paulding County, GA R+20
- Cherokee County, GA R+33
- Douglas County, GA D+28
- DeKalb County, GA D+63
- Bartow County, GA R+46
- Gwinnett County, GA D+21
- Forsyth County, GA R+22
- Clayton County, GA D+68
- Carroll County, GA R+35
Counties with Similar Populations
- San Mateo County, CA D+48
- DeKalb County, GA D+63
- Lee County, FL R+19
- Monroe County, NY D+25
- San Joaquin County, CA D+4
- Jefferson County, KY D+20
- Oklahoma County, OK D+6
- Suffolk County, MA D+53
- El Paso County, CO R+7
- Norfolk County, MA D+30
Sources and methodology
Precinct-level voting records used to fit the model come from Georgia Elections Division, 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.