30308 is a Democratic stronghold. About 81% of voters here vote Democratic and 19% Republican.
About 63% of adults in 30308 typically vote, near the U.S. average of about 62%. Among adults in 30308, ~51% vote Democratic, ~12% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.
How 30308 compares
Among zip codes within 15 miles, 30308 leans more Democratic than 37 of 70 neighbors.
30308 runs about 65 points more Democratic than Georgia as a whole. Georgia is roughly evenly split, and 30308 sits clearly on the Democratic side.
Politics vary noticeably by block within 30308. The south side is the most Democratic-leaning (D+69) and the southeast side is the least Democratic-leaning (D+55), a spread of about 14 points.
Why 30308 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 30308, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 30308 live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 30308 sits in the top quarter (about 77%, in the top fraction of zip codes). 30308 runs against the grain of Georgia, a Democratic-leaning outlier in a roughly evenly split state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 30308, GA sits in the top tenth nationally on this measure.
Why turnout in 30308 looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in 30308 have completed high school, about 11 points above the Georgia average of 86%. 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.