31905 leans Republican by roughly 22 points: about 39% of voters vote Democratic and 61% Republican.
About 44% of adults in 31905 typically vote, below the U.S. average of about 62%. Among adults in 31905, ~17% vote Democratic, ~27% Republican, and ~56% don't vote. The map below shows estimated turnout by block group.
How 31905 compares
Among zip codes within 15 miles, 31905 leans more Republican than 11 of 15 neighbors.
31905 runs about 20 points more Republican than Georgia as a whole.
Politics vary noticeably by block within 31905. The northeast side is the most Republican-leaning (R+40) and the west side is the least Republican-leaning (R+5), a spread of about 35 points.
Why 31905 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 31905, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 85% of households in 31905 are family households, about 18 points above the U.S. average of 67%.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 31905, GA sits below the national average 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 31905 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 31905 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 more than 99% of households in 31905 rent, compared to around 45% in nearby zip codes. Low high-school completion lines up with lower turnout, and about 97% of adults in 31905 have completed high school, above 92% 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.