30345 leans heavily Democratic by roughly 42 points: about 71% of voters vote Democratic and 29% Republican.
About 72% of adults in 30345 typically vote, above the U.S. average of about 62%. Among adults in 30345, ~51% vote Democratic, ~21% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How 30345 compares
Among zip codes within 15 miles, 30345 leans more Democratic than 29 of 67 neighbors.
30345 runs about 44 points more Democratic than Georgia as a whole. Georgia is roughly evenly split, and 30345 sits clearly on the Democratic side.
Politics vary noticeably by block within 30345. The east side is the most Democratic-leaning (D+48) and the south side is the least Democratic-leaning (D+32), a spread of about 17 points.
Why 30345 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 30345, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 60% of adults in 30345 hold a bachelor's degree, about 31 points above the U.S. average of 28%. Dense areas vote Democratic, and 30345 sits in the top fifth on density (about 97%, above 93% of zip codes). 30345 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; 30345, 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 30345 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 30345 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.