30178 is a Republican stronghold. About 12% of voters here vote Democratic and 88% Republican.
About 69% of adults in 30178 typically vote, above the U.S. average of about 62%. Among adults in 30178, ~8% vote Democratic, ~61% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How 30178 compares
Among zip codes within 15 miles, 30178 is the most Republican-leaning.
30178 runs about 74 points more Republican than Georgia as a whole.
Why 30178 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 30178, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 83% of households in 30178 are family households, about 16 points above the U.S. average of 67%.
Never-married share and voter turnout
Places with a low never-married share tend to turn out at a higher rate; 30178, GA sits in the bottom quarter nationally on this measure.
Why turnout in 30178 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 30178 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.