20724 is a Democratic stronghold. About 78% of voters here vote Democratic and 22% Republican.
About 67% of adults in 20724 typically vote, near the U.S. average of about 62%. Among adults in 20724, ~52% vote Democratic, ~15% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How 20724 compares
Among zip codes within 15 miles, 20724 leans more Democratic than 42 of 72 neighbors.
20724 runs about 26 points more Democratic than Maryland as a whole.
Politics vary noticeably by block within 20724. The east side is the most Democratic-leaning (D+72) and the southwest side is the least Democratic-leaning (D+22), a spread of about 50 points.
Why 20724 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 20724, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in 20724 is about 20%, about 53 points below the U.S. average of 72%. High college attainment predicts Democratic voting, and 20724 sits in the top quarter (about 44%, above 84% of zip codes). A high never-married share predicts Democratic voting, and about 39% of adults in 20724 have never been married, above 86% of zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 20724, MD sits in the top quarter 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 20724 looks the way it does
Turnout in 20724 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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 Maryland State 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.