30803 is a Republican stronghold. About 20% of voters here vote Democratic and 80% Republican.
About 64% of adults in 30803 typically vote, near the U.S. average of about 62%. Among adults in 30803, ~13% vote Democratic, ~51% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How 30803 compares
Among zip codes within 15 miles, 30803 leans more Republican than 6 of 7 neighbors.
30803 runs about 57 points more Republican than Georgia as a whole.
Politics vary noticeably by block within 30803. The north side is the most Republican-leaning (R+63) and the northeast side is the least Republican-leaning (R+52), a spread of about 12 points.
Why 30803 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 30803, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 88% of residents in 30803 drive to work alone, about 14 points above the U.S. average of 74%. Low college attainment predicts Republican voting, and 30803 sits in the bottom quarter (about 6%, in the bottom fraction of zip codes). A high family-household share predicts Republican voting, and about 86% of households in 30803 are family households, above 98% of zip codes.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 30803, GA sits in the bottom tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 30803 looks the way it does
Homeowners vote more often than renters. About 89% of households in 30803 own their home, about 16 points above the Georgia average of 73%. Limited routine healthcare access lines up with lower turnout, and 30803 sits in the bottom quarter on routine-care measures. 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.