19143 is a Democratic stronghold. About 94% of voters here vote Democratic and 6% Republican.
About 76% of adults in 19143 typically vote, above the U.S. average of about 62%. Among adults in 19143, ~71% vote Democratic, ~5% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How 19143 compares
Among zip codes within 15 miles, 19143 leans more Democratic than 100 of 104 neighbors.
19143 runs about 90 points more Democratic than Pennsylvania as a whole. Pennsylvania is roughly evenly split, and 19143 sits clearly on the Democratic side.
Why 19143 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 19143, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 98% of residents in 19143 live in densely developed areas, about 62 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 55% of adults in 19143 have never been married, above 97% of zip codes. 19143 runs against the grain of Pennsylvania, a Democratic-leaning outlier in a roughly evenly split state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 19143, PA 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 19143 looks the way it does
Turnout in 19143 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 Pennsylvania Department of State, Bureau 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.