21219 leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% Republican.
About 79% of adults in 21219 typically vote, above the U.S. average of about 62%. Among adults in 21219, ~29% vote Democratic, ~51% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How 21219 compares
Among zip codes within 15 miles, 21219 leans more Republican than 47 of 49 neighbors.
21219 runs about 56 points more Republican than Maryland as a whole. Maryland leans Democratic overall, while 21219 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 21219. The west side is the most Republican-leaning (R+33) and the northeast side is the least Republican-leaning (R+21), a spread of about 11 points.
Why 21219 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 21219, not a ranked or complete list of what matters most.
21219 votes against the grain of Maryland. Maryland leans Democratic overall, while 21219 runs about 56 points more Republican.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 21219, MD sits above the national average on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 21219 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 21219 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 65%, above 63% of zip codes. Homeowners vote more often than renters, and about 89% of households in 21219 own their home, compared to around 63% in nearby 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 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.