20106 leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.
About 97% of adults in 20106 typically vote, above the U.S. average of about 62%. Among adults in 20106, ~33% vote Democratic, ~64% Republican, and ~3% don't vote. The map below shows estimated turnout by block group.
How 20106 compares
Among zip codes within 15 miles, 20106 leans more Republican than 14 of 18 neighbors.
20106 runs about 39 points more Republican than Virginia as a whole. Virginia leans Democratic overall, while 20106 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 20106. The east side is the most Republican-leaning (R+43) and the west side is the least Republican-leaning (R+8), a spread of about 35 points.
Why 20106 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 20106, not a ranked or complete list of what matters most.
20106 votes against the grain of Virginia. Virginia leans Democratic overall, while 20106 runs about 39 points more Republican. A high family-household share predicts Republican voting, and about 74% of households in 20106 are family households, above 77% of zip codes.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 20106, VA sits below the national average 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 20106 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 20106 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 69%, about 9 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 88% of households in 20106 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.