30257 is a Republican stronghold. About 18% of voters here vote Democratic and 82% Republican.
About 79% of adults in 30257 typically vote, above the U.S. average of about 62%. Among adults in 30257, ~14% vote Democratic, ~65% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How 30257 compares
Among zip codes within 15 miles, 30257 leans more Republican than 5 of 9 neighbors.
30257 runs about 62 points more Republican than Georgia as a whole.
Politics vary noticeably by block within 30257. The northwest side is the most Republican-leaning (R+70) and the southeast side is the least Republican-leaning (R+54), a spread of about 16 points.
Why 30257 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 30257, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 84% of residents in 30257 drive to work alone, about 10 points above the U.S. average of 74%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 30257, GA sits below the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 30257 looks the way it does
Homeowners vote more often than renters. About 88% of households in 30257 own their home, about 15 points above the Georgia average of 73%. 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.