30084 leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 65% of adults in 30084 typically vote, near the U.S. average of about 62%. Among adults in 30084, ~44% vote Democratic, ~21% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How 30084 compares
Among zip codes within 15 miles, 30084 leans more Democratic than 22 of 62 neighbors.
30084 runs about 38 points more Democratic than Georgia as a whole. Georgia is roughly evenly split, and 30084 sits clearly on the Democratic side.
Politics vary noticeably by block within 30084. The south side is the most Democratic-leaning (D+49) and the west side is the least Democratic-leaning (D+24), a spread of about 25 points.
Why 30084 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 30084, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 95% of residents in 30084 live in densely developed areas, about 58 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 30084 sits in the top quarter (about 42%, above 83% of zip codes). 30084 runs against the grain of Georgia, a Democratic-leaning outlier in a roughly evenly split state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 30084, GA sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 30084 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 30084 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.