30428 leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 66% of adults in 30428 typically vote, near the U.S. average of about 62%. Among adults in 30428, ~17% vote Democratic, ~49% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How 30428 compares
Among zip codes within 15 miles, 30428 leans more Republican than 4 of 8 neighbors.
30428 runs about 46 points more Republican than Georgia as a whole.
Politics vary noticeably by block within 30428. The northwest side is the most Republican-leaning (R+67) and the west side is the least Republican-leaning (R+20), a spread of about 47 points.
Why 30428 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 30428, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 5% of residents in 30428 live in densely developed areas, about 21 points below the Georgia average of 26%. Low college attainment predicts Republican voting, and 30428 sits in the bottom quarter (about 14%, below 84% of zip codes).
Population density, never-married share, and Republican lean
Places that combine low population density and a never-married-heavy adult population tend to lean Republican, as 30428, GA does.
Why turnout in 30428 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 30428 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. 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.