19964 is a Republican stronghold. About 24% of voters here vote Democratic and 76% Republican.
About 78% of adults in 19964 typically vote, above the U.S. average of about 62%. Among adults in 19964, ~19% vote Democratic, ~59% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How 19964 compares
Among zip codes within 15 miles, 19964 leans more Republican than 24 of 26 neighbors.
19964 runs about 66 points more Republican than Delaware as a whole. Delaware leans Democratic overall, while 19964 is one of the few Republican-leaning pockets.
Why 19964 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 19964, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 6% of adults in 19964 hold a bachelor's degree, about 26 points below the Delaware average of 32%. 19964 runs against the grain of Delaware, a Republican-leaning pocket in a Democratic-leaning state.
Park access and Republican lean
Places with low park coverage tend to lean Republican; 19964, DE sits in the bottom tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 19964 looks the way it does
Turnout in 19964 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.