20711 leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 79% of adults in 20711 typically vote, above the U.S. average of about 62%. Among adults in 20711, ~37% vote Democratic, ~42% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How 20711 compares
Among zip codes within 15 miles, 20711 leans more Republican than 24 of 35 neighbors.
20711 runs about 36 points more Republican than Maryland as a whole. Maryland leans Democratic overall, while 20711 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 20711. The northwest side runs the most Democratic (Even) and the southeast side runs the most Republican (R+20), a spread of about 21 points.
Why 20711 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 20711, not a ranked or complete list of what matters most.
20711 votes against the grain of Maryland. Maryland leans Democratic overall, while 20711 runs about 36 points more Republican. A high family-household share predicts Republican voting, and about 74% of households in 20711 are family households, above 78% of zip codes.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; 20711, MD sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 20711 looks the way it does
Homeowners vote more often than renters. About 94% of households in 20711 own their home, about 17 points above the Maryland average of 77%. 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.