20733 leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 93% of adults in 20733 typically vote, above the U.S. average of about 62%. Among adults in 20733, ~43% vote Democratic, ~50% Republican, and ~7% don't vote. The map below shows estimated turnout by block group.
How 20733 compares
Among zip codes within 15 miles, 20733 leans more Republican than 15 of 30 neighbors.
20733 runs about 37 points more Republican than Maryland as a whole. Maryland leans Democratic overall, while 20733 is one of the few Republican-leaning pockets.
Why 20733 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 20733, not a ranked or complete list of what matters most.
20733 votes against the grain of Maryland. Maryland leans Democratic overall, while 20733 runs about 37 points more Republican. A high family-household share predicts Republican voting, and about 76% of households in 20733 are family households, above 82% of zip codes.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 20733, MD sits in the top tenth nationally 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 20733 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 20733 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 72%, about 12 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 94% of households in 20733 own their home, about 19 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 98% of adults in 20733 have completed high school, above 92% 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.