20833 leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 87% of adults in 20833 typically vote, above the U.S. average of about 62%. Among adults in 20833, ~56% vote Democratic, ~31% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How 20833 compares
Among zip codes within 15 miles, 20833 leans more Democratic than 14 of 67 neighbors.
Politically, 20833 sits close to the rest of Maryland.
Politics vary noticeably by block within 20833. The south side is the most Democratic-leaning (D+39) and the northwest side is the least Democratic-leaning (D+12), a spread of about 27 points.
Why 20833 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 20833, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 64% of adults in 20833 hold a bachelor's degree, about 35 points above the U.S. average of 28%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 20833, 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 20833 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 20833 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 74%, about 14 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 93% of households in 20833 own their home, about 18 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 98% of adults in 20833 have completed high school, above 94% 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.