20736 leans Republican by roughly 18 points: about 41% of voters vote Democratic and 59% Republican.
About 96% of adults in 20736 typically vote, above the U.S. average of about 62%. Among adults in 20736, ~39% vote Democratic, ~57% Republican, and ~4% don't vote. The map below shows estimated turnout by block group.
How 20736 compares
Among zip codes within 15 miles, 20736 leans more Republican than 18 of 21 neighbors.
20736 runs about 46 points more Republican than Maryland as a whole. Maryland leans Democratic overall, while 20736 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 20736. The southwest side is the most split-leaning (R+28) and the southeast side is the least split-leaning (Even), a spread of about 27 points.
Why 20736 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 20736, not a ranked or complete list of what matters most.
20736 votes against the grain of Maryland. Maryland leans Democratic overall, while 20736 runs about 46 points more Republican. A high family-household share predicts Republican voting, and about 80% of households in 20736 are family households, above 91% of zip codes.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; 20736, MD sits in the top tenth nationally on this measure.
Why turnout in 20736 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 20736 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 73%, about 13 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 93% of households in 20736 own their home, about 18 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 96% of adults in 20736 have completed high school, above 83% 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.