19111 leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 61% of adults in 19111 typically vote, near the U.S. average of about 62%. Among adults in 19111, ~39% vote Democratic, ~22% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How 19111 compares
Among zip codes within 15 miles, 19111 leans more Democratic than 42 of 104 neighbors.
19111 runs about 29 points more Democratic than Pennsylvania as a whole. Pennsylvania is roughly evenly split, and 19111 sits clearly on the Democratic side.
Politics vary noticeably by block within 19111. The southwest side is the most Democratic-leaning (D+49) and the northwest side is the least Democratic-leaning (D+3), a spread of about 47 points.
Why 19111 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 19111, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 99% of residents in 19111 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 39% of adults in 19111 have never been married, above 86% of zip codes. 19111 runs against the grain of Pennsylvania, a Democratic-leaning outlier in a roughly evenly split state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 19111, PA sits in the top tenth nationally on this measure.
Why turnout in 19111 looks the way it does
Renters vote less often than owners. About 43% of households in 19111 rent, about 18 points above the U.S. average of 25%. 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.