21074 leans Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 89% of adults in 21074 typically vote, above the U.S. average of about 62%. Among adults in 21074, ~31% vote Democratic, ~58% Republican, and ~11% don't vote. The map below shows estimated turnout by block group.
How 21074 compares
Among zip codes within 15 miles, 21074 leans more Republican than 17 of 22 neighbors.
21074 runs about 58 points more Republican than Maryland as a whole. Maryland leans Democratic overall, while 21074 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 21074. The southwest side is the most Republican-leaning (R+35) and the southeast side is the least Republican-leaning (R+22), a spread of about 13 points.
Why 21074 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 21074, not a ranked or complete list of what matters most.
21074 votes against the grain of Maryland. Maryland leans Democratic overall, while 21074 runs about 58 points more Republican.
Food insecurity and voter turnout
Places with low food insecurity tend to turn out at a higher rate; 21074, MD sits in the bottom tenth nationally on this measure. Food insecurity does not directly drive turnout; it reflects economic hardship, which lines up with lower voting.
Why turnout in 21074 looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in 21074 have completed high school, about 6 points above the U.S. average of 90%. 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.