21113 leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 76% of adults in 21113 typically vote, above the U.S. average of about 62%. Among adults in 21113, ~52% vote Democratic, ~24% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How 21113 compares
Among zip codes within 15 miles, 21113 leans more Democratic than 26 of 65 neighbors.
21113 runs about 8 points more Democratic than Maryland as a whole.
Politics vary noticeably by block within 21113. The northwest side is the most Democratic-leaning (D+62) and the east side is the least Democratic-leaning (D+22), a spread of about 39 points.
Why 21113 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 21113, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 54% of adults in 21113 hold a bachelor's degree, about 25 points above the U.S. average of 28%. Dense areas vote Democratic, and 21113 sits in the top fifth on density (about 76%, above 81% of zip codes). A high never-married share predicts Democratic voting, and about 35% of adults in 21113 have never been married, above 79% of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 21113, MD sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 21113 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 21113 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 70%, about 10 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in 21113 have completed high school, above 91% 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 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.