20774 is a Democratic stronghold. About 92% of voters here vote Democratic and 8% Republican.
About 79% of adults in 20774 typically vote, above the U.S. average of about 62%. Among adults in 20774, ~73% vote Democratic, ~6% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How 20774 compares
Among zip codes within 15 miles, 20774 leans more Democratic than 72 of 83 neighbors.
20774 runs about 55 points more Democratic than Maryland as a whole.
Why 20774 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 20774, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in 20774 is about 5%, about 67 points below the U.S. average of 72%. High college attainment predicts Democratic voting, and 20774 sits in the top quarter (about 47%, above 87% of zip codes). A high never-married share predicts Democratic voting, and about 39% of adults in 20774 have never been married, above 87% of zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 20774, 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 20774 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 20774 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 66%, about 6 points above the U.S. average of 60%. 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.