20135 leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% Republican.
About 93% of adults in 20135 typically vote, above the U.S. average of about 62%. Among adults in 20135, ~41% vote Democratic, ~52% Republican, and ~7% don't vote. The map below shows estimated turnout by block group.
How 20135 compares
Among zip codes within 15 miles, 20135 leans more Republican than 7 of 20 neighbors.
20135 runs about 16 points more Republican than Virginia as a whole. Virginia leans Democratic overall, while 20135 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 20135. The northeast side is the most Republican-leaning (R+27) and the east side is the least Republican-leaning (R+5), a spread of about 22 points.
Why 20135 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 20135, not a ranked or complete list of what matters most.
20135 votes against the grain of Virginia. Virginia leans Democratic overall, while 20135 runs about 16 points more Republican. A high family-household share predicts Republican voting, and about 74% of households in 20135 are family households, above 76% of zip codes.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 20135, VA sits in the top tenth nationally 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 20135 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 20135 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 74%, about 14 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 88% of households in 20135 own their home, above 81% 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 Virginia Department of Elections, 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.