20319 is a Democratic stronghold. About 89% of voters here vote Democratic and 11% Republican.
About 85% of adults in 20319 typically vote, above the U.S. average of about 62%. Among adults in 20319, ~76% vote Democratic, ~9% Republican, and ~15% don't vote. The map below shows estimated turnout by block group.
How 20319 compares
Among zip codes within 15 miles, 20319 leans more Democratic than 98 of 120 neighbors.
20319 runs about 5 points more Republican than the District of Columbia as a whole.
Why 20319 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 20319, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 77% of adults in 20319 hold a bachelor's degree, about 49 points above the U.S. average of 28%. Density combined with diversity predicts Democratic voting, and non-Hispanic white share in 20319 is about 69%, compared to around 41% in nearby zip codes. A high never-married share predicts Democratic voting, and about 51% of adults in 20319 have never been married, above 95% of zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 20319, DC sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 20319 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 20319 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 77%, about 17 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and more than 99% of adults in 20319 have completed high school, in the top fraction 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 District of Columbia Board 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.