19539 leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 80% of adults in 19539 typically vote, above the U.S. average of about 62%. Among adults in 19539, ~26% vote Democratic, ~54% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How 19539 compares
Among zip codes within 15 miles, 19539 leans more Republican than 40 of 48 neighbors.
19539 runs about 34 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by block within 19539. The southeast side is the most Republican-leaning (R+44) and the west side is the least Republican-leaning (R+32), a spread of about 11 points.
Why 19539 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 19539. The lean here lands roughly where demographic data alone would predict.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; 19539, PA sits in the top quarter nationally on this measure.
Why turnout in 19539 looks the way it does
Homeowners vote more often than renters. About 89% of households in 19539 own their home, about 10 points above the Pennsylvania average of 79%. 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.