Rockdale County leans heavily Democratic by roughly 42 points: about 71% of voters vote Democratic and 29% Republican.
About 78% of adults in Rockdale County typically vote, above the U.S. average of about 62%. Among adults in Rockdale County, ~55% vote Democratic, ~23% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How Rockdale County compares
Among counties within 50 miles, Rockdale County leans more Democratic than 25 of 28 neighbors.
Rockdale County runs about 44 points more Democratic than Georgia as a whole. Georgia is roughly evenly split, and Rockdale County sits clearly on the Democratic side.
Politics vary noticeably by city within Rockdale County. The east side is the most Democratic-leaning (D+67) and the north side is the least Democratic-leaning (D+29), a spread of about 39 points.
Why Rockdale County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Rockdale County, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in Rockdale County is about 24%, about 48 points below the U.S. average of 72%. High college attainment predicts Democratic voting, and Rockdale County sits in the top quarter (about 32%, above 81% of counties). Rockdale County runs against the grain of Georgia, a Democratic-leaning outlier in a roughly evenly split state.
Developed land and Democratic lean
Places with a heavily developed built environment tend to lean Democratic; Rockdale County, GA sits in the top quarter nationally on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Rockdale County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Rockdale County 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 Counties
- Newton County, GA D+16
- Henry County, GA D+26
- DeKalb County, GA D+63
- Walton County, GA R+37
- Clayton County, GA D+68
- Gwinnett County, GA D+21
- Butts County, GA R+38
- Fulton County, GA D+46
- Jasper County, GA R+48
- Barrow County, GA R+36
Counties with Similar Populations
- Lauderdale County, AL R+47
- Steuben County, NY R+32
- St. Croix County, WI R+20
- Pottawattamie County, IA R+18
- Tuscarawas County, OH R+48
- Campbell County, KY R+16
- Bowie County, TX R+29
- Suffolk City, VA D+20
- Cabell County, WV R+19
- Calvert County, MD R+14
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.