30904 leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 61% of adults in 30904 typically vote, near the U.S. average of about 62%. Among adults in 30904, ~42% vote Democratic, ~19% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How 30904 compares
Among zip codes within 15 miles, 30904 leans more Democratic than 16 of 20 neighbors.
30904 runs about 38 points more Democratic than Georgia as a whole. Georgia is roughly evenly split, and 30904 sits clearly on the Democratic side.
Politics vary noticeably by block within 30904. The south side is the most Democratic-leaning (D+66) and the north side is the least Democratic-leaning (Even), a spread of about 65 points.
Why 30904 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 30904, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 95% of residents in 30904 live in densely developed areas, about 59 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 45% of adults in 30904 have never been married, above 92% of zip codes. 30904 runs against the grain of Georgia, a Democratic-leaning outlier in a roughly evenly split state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 30904, GA sits in the bottom quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 30904 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 30904 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 55% of households in 30904 rent, about 30 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 26% of adults in 30904 report food insecurity, above 91% of zip codes. 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.