20667 leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.
About 66% of adults in 20667 typically vote, near the U.S. average of about 62%. Among adults in 20667, ~35% vote Democratic, ~31% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How 20667 compares
Among zip codes within 15 miles, 20667 leans more Democratic than 18 of 21 neighbors.
20667 runs about 23 points more Republican than Maryland as a whole.
Why 20667 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 20667, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 47% of adults in 20667 hold a bachelor's degree, about 18 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 42% of adults in 20667 have never been married, above 89% of zip codes.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; 20667, 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 20667 looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in 20667 have completed high school, about 6 points above the Maryland average of 91%. 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.