30189 leans Republican by roughly 24 points: about 38% of voters vote Democratic and 62% Republican.
About 84% of adults in 30189 typically vote, above the U.S. average of about 62%. Among adults in 30189, ~32% vote Democratic, ~52% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How 30189 compares
Among zip codes within 15 miles, 30189 leans more Republican than 11 of 18 neighbors.
30189 runs about 22 points more Republican than Georgia as a whole.
Politics vary noticeably by block within 30189. The north side is the most Republican-leaning (R+37) and the northeast side is the least Republican-leaning (R+5), a spread of about 31 points.
Why 30189 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 30189, not a ranked or complete list of what matters most.
30189 votes Republican even though it is densely developed (about 72%, far above the Georgia average of 26%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 76% of households in 30189 are family households, above 83% of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 30189, GA sits in the top quarter nationally on this measure.
Why turnout in 30189 looks the way it does
Turnout in 30189 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.