30303 is a Democratic stronghold. About 87% of voters here vote Democratic and 13% Republican.
About 43% of adults in 30303 typically vote, below the U.S. average of about 62%. Among adults in 30303, ~38% vote Democratic, ~5% Republican, and ~57% don't vote. The map below shows estimated turnout by block group.
How 30303 compares
Among zip codes within 15 miles, 30303 leans more Democratic than 47 of 66 neighbors.
30303 runs about 77 points more Democratic than Georgia as a whole. Georgia is roughly evenly split, and 30303 sits clearly on the Democratic side.
Politics vary noticeably by block within 30303. The east side is the most Democratic-leaning (D+80) and the south side is the least Democratic-leaning (D+67), a spread of about 14 points.
Why 30303 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 30303, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 30303 live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 30303 sits in the top quarter (about 53%, above 91% of zip codes). 30303 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; 30303, GA sits in the top tenth nationally on this measure.
Why turnout in 30303 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 30303 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 81% of households in 30303 rent, compared to around 60% in nearby zip codes. High food insecurity lines up with lower turnout, and about 29% of adults in 30303 report food insecurity, above 93% 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.