30251 leans heavily Republican by roughly 42 points: about 29% of voters vote Democratic and 71% Republican.
About 67% of adults in 30251 typically vote, near the U.S. average of about 62%. Among adults in 30251, ~19% vote Democratic, ~48% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How 30251 compares
Among zip codes within 15 miles, 30251 leans more Republican than 5 of 9 neighbors.
30251 runs about 40 points more Republican than Georgia as a whole.
Politics vary noticeably by block within 30251. The southeast side is the most Republican-leaning (R+64) and the northwest side is the least Republican-leaning (R+26), a spread of about 38 points.
Why 30251 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 30251, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 92% of residents in 30251 drive to work alone, about 18 points above the U.S. average of 74%. Low college attainment predicts Republican voting, and 30251 sits in the bottom quarter (about 11%, below 93% of zip codes). A high family-household share predicts Republican voting, and about 76% of households in 30251 are family households, above 82% of zip codes.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 30251, GA sits in the bottom tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 30251 looks the way it does
Limited routine healthcare access lines up with lower turnout, and 30251 sits in the bottom quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.