15450 leans Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 55% of adults in 15450 typically vote, below the U.S. average of about 62%. Among adults in 15450, ~35% vote Democratic, ~19% Republican, and ~46% don't vote. The map below shows estimated turnout by block group.
How 15450 compares
Among zip codes within 15 miles, 15450 is the most Democratic-leaning.
15450 runs about 32 points more Democratic than Pennsylvania as a whole. Pennsylvania is roughly evenly split, and 15450 sits clearly on the Democratic side.
Politics vary noticeably by block within 15450. The southwest side runs the most Democratic (D+40) and the west side runs the most Republican (R+41), a spread of about 81 points.
Why 15450 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 15450, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 65% of adults in 15450 have never been married, far above similar-sized zip codes (around 32%). 15450 runs against the grain of Pennsylvania, a Democratic-leaning outlier in a roughly evenly split state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 15450, PA sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 15450 looks the way it does
Areas with low high-school completion turn out at lower rates. About 79% of adults in 15450 have completed high school, about 11 points below the U.S. average of 90%. Limited routine healthcare access lines up with lower turnout, and 15450 sits in the bottom quarter on routine-care measures. 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.