Congress Heights is a Democratic stronghold. About 93% of voters here vote Democratic and 7% Republican.
About 55% of adults in Congress Heights typically vote, below the U.S. average of about 62%. Among adults in Congress Heights, ~51% vote Democratic, ~4% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.
How Congress Heights compares
Among neighborhoods within 5 miles, Congress Heights leans more Democratic than 30 of 31 neighbors.
Politically, Congress Heights sits close to the rest of the District of Columbia.
Why Congress Heights leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Congress Heights, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 60% of adults in Congress Heights have never been married, modestly above similar-sized neighborhoods (around 54%).
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; Congress Heights, Washington, DC sits in the top quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Congress Heights looks the way it does
Renters vote less often than owners. About 70% of households in Congress Heights rent, about 45 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 34% of adults in Congress Heights report food insecurity, above 87% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Anacostia, Washington, DC D+85
- Fairlawn, Washington, DC D+86
- South West, Washington, DC D+76
- Potomac Yard-Potomac Greens, Alexandria, VA D+58
- Oxon Hill-Glassmanor, Oxon Hill, MD D+79
- Crystal City, Arlington, VA D+59
- Hill East, Washington, DC D+80
- Lincoln Park, Washington, DC D+84
- Aurora Highlands, Arlington, VA D+61
- Capitol Hill, Washington, DC D+77
Neighborhoods with Similar Populations
- Martin Luther King, Austin, TX D+64
- Maple Leaf, Seattle, WA D+78
- Pine Hills, Albany, NY D+62
- Home Park, Atlanta, GA D+60
- South Semoran, Orlando, FL D+13
- South Ironbound, Newark, NJ D+25
- Park Hills, Yonkers, NY D+28
- Harmony Village, Detroit, MI D+87
- South Redlands, Redlands, CA Even
- Morningside-Lenox Park, Atlanta, GA D+46
Sources and methodology
Precinct-level voting records used to fit the model come from District of Columbia 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.