16507 leans heavily Democratic by roughly 38 points: about 69% of voters vote Democratic and 31% Republican.
About 51% of adults in 16507 typically vote, below the U.S. average of about 62%. Among adults in 16507, ~35% vote Democratic, ~16% Republican, and ~49% don't vote. The map below shows estimated turnout by block group.
How 16507 compares
Among zip codes within 15 miles, 16507 leans more Democratic than 17 of 18 neighbors.
16507 runs about 40 points more Democratic than Pennsylvania as a whole. Pennsylvania is roughly evenly split, and 16507 sits clearly on the Democratic side.
Politics vary noticeably by block within 16507. The south side is the most Democratic-leaning (D+45) and the northwest side is the least Democratic-leaning (Even), a spread of about 43 points.
Why 16507 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 16507, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 87% of residents in 16507 live in densely developed areas, about 51 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 59% of adults in 16507 have never been married, above 98% of zip codes. 16507 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; 16507, PA sits in the top tenth nationally on this measure.
Why turnout in 16507 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 16507 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 47%, about 17 points below the Pennsylvania average of 64%. Renters vote less often than owners, and about 67% of households in 16507 rent, compared to around 42% in nearby zip codes. High-crime urban areas turn out at lower rates, and 16507 sits in the top 15% on a violent-crime measure. 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.