30148 is a Republican stronghold. About 22% of voters here vote Democratic and 78% Republican.
About 88% of adults in 30148 typically vote, above the U.S. average of about 62%. Among adults in 30148, ~19% vote Democratic, ~68% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How 30148 compares
Among zip codes within 15 miles, 30148 leans more Republican than 2 of 7 neighbors.
30148 runs about 55 points more Republican than Georgia as a whole.
Politics vary noticeably by block within 30148. The east side is the most Republican-leaning (R+74) and the north side is the least Republican-leaning (R+23), a spread of about 51 points.
Why 30148 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 30148, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 80% of households in 30148 are family households, about 13 points above the U.S. average of 67%.
Renting and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; 30148, GA sits in the bottom tenth nationally on this measure.
Why turnout in 30148 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 30148 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 64%, above 60% of zip codes. Homeowners vote more often than renters, and about 96% of households in 30148 own their home, about 21 points above the U.S. average of 75%. 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.