30642 leans Republican by roughly 18 points: about 41% of voters vote Democratic and 59% Republican.
About 82% of adults in 30642 typically vote, above the U.S. average of about 62%. Among adults in 30642, ~34% vote Democratic, ~49% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How 30642 compares
Among zip codes within 15 miles, 30642 leans more Republican than 3 of 4 neighbors.
30642 runs about 15 points more Republican than Georgia as a whole.
Politics vary noticeably by block within 30642. The north side runs the most Democratic (D+23) and the south side runs the most Republican (R+48), a spread of about 70 points.
Why 30642 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 30642. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; 30642, GA sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 30642 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 30642 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 62%, about 6 points above the Georgia average of 56%. 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.