15625 leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 85% of adults in 15625 typically vote, above the U.S. average of about 62%. Among adults in 15625, ~22% vote Democratic, ~63% Republican, and ~15% don't vote. The map below shows estimated turnout by block group.
How 15625 compares
Among zip codes within 15 miles, 15625 leans more Republican than 76 of 83 neighbors.
15625 runs about 47 points more Republican than Pennsylvania as a whole.
Why 15625 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 15625, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 15625, more than 99% of residents are non-Hispanic white, about 27 points above the U.S. average of 72%; about 13% of adults hold a bachelor's degree, about 13 points below the Pennsylvania average of 26%. Car-dependent areas vote Republican, and about 91% of residents in 15625 drive to work alone, above 97% of zip codes.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; 15625, PA sits in the top quarter nationally on this measure.
Why turnout in 15625 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 15625 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 66%, about 6 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in 15625 have completed high school, above 84% of zip codes. 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.