21056 leans heavily Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 75% of adults in 21056 typically vote, above the U.S. average of about 62%. Among adults in 21056, ~26% vote Democratic, ~49% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How 21056 compares
Among zip codes within 15 miles, 21056 is the most Republican-leaning.
21056 runs about 59 points more Republican than Maryland as a whole. Maryland leans Democratic overall, while 21056 is one of the few Republican-leaning pockets.
Why 21056 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 21056, not a ranked or complete list of what matters most.
21056 votes against the grain of Maryland. Maryland leans Democratic overall, while 21056 runs about 59 points more Republican.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; 21056, MD sits in the top tenth nationally on this measure.
Why turnout in 21056 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 21056 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 68%, about 8 points above the U.S. average of 60%. Homeowners vote more often than renters, and more than 99% of households in 21056 own their home, compared to around 78% 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.