30457 leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 61% of adults in 30457 typically vote, near the U.S. average of about 62%. Among adults in 30457, ~20% vote Democratic, ~41% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How 30457 compares
Among zip codes within 15 miles, 30457 leans more Republican than 1 of 6 neighbors.
30457 runs about 31 points more Republican than Georgia as a whole.
Politics vary noticeably by block within 30457. The northeast side is the most Republican-leaning (R+76) and the south side is the least Republican-leaning (R+7), a spread of about 68 points.
Why 30457 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 30457, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 12% of adults in 30457 hold a bachelor's degree, about 12 points below the Georgia average of 24%.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 30457, GA sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 30457 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 30457 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 45%, about 11 points below the Georgia average of 56%. Renters vote less often than owners, and about 36% of households in 30457 rent, above 83% of zip codes. High food insecurity lines up with lower turnout, and about 30% of adults in 30457 report food insecurity, above 93% of zip codes. 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.