19940 leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 71% of adults in 19940 typically vote, above the U.S. average of about 62%. Among adults in 19940, ~23% vote Democratic, ~48% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How 19940 compares
Among zip codes within 15 miles, 19940 leans more Republican than 12 of 18 neighbors.
19940 runs about 48 points more Republican than Delaware as a whole. Delaware leans Democratic overall, while 19940 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 19940. The southeast side is the most Republican-leaning (R+45) and the south side is the least Republican-leaning (R+22), a spread of about 24 points.
Why 19940 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 19940, not a ranked or complete list of what matters most.
19940 votes against the grain of Delaware. Delaware leans Democratic overall, while 19940 runs about 48 points more Republican. Car-dependent areas vote Republican, and about 83% of residents in 19940 drive to work alone, above 82% of zip codes.
Park access and Republican lean
Places with low park coverage tend to lean Republican; 19940, DE sits below the national average on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 19940 looks the way it does
Turnout in 19940 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.