19804 leans Democratic by roughly 18 points: about 59% of voters vote Democratic and 41% Republican.
About 65% of adults in 19804 typically vote, near the U.S. average of about 62%. Among adults in 19804, ~38% vote Democratic, ~27% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How 19804 compares
Among zip codes within 15 miles, 19804 leans more Democratic than 19 of 39 neighbors.
Politically, 19804 sits close to the rest of Delaware.
Politics vary noticeably by block within 19804. The northwest side is the most Democratic-leaning (D+28) and the southwest side is the least Democratic-leaning (D+10), a spread of about 18 points.
Why 19804 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 19804, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 87% of residents in 19804 live in densely developed areas, about 50 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 40% of adults in 19804 have never been married, above 88% of zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 19804, DE sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 19804 looks the way it does
Turnout in 19804 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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 Delaware Department 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.