15620 leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 67% of adults in 15620 typically vote, near the U.S. average of about 62%. Among adults in 15620, ~20% vote Democratic, ~47% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How 15620 compares
Among zip codes within 15 miles, 15620 leans more Republican than 20 of 37 neighbors.
15620 runs about 39 points more Republican than Pennsylvania as a whole.
Why 15620 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 15620, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 15620, about 96% of residents are non-Hispanic white, about 24 points above the U.S. average of 72%; about 16% of adults hold a bachelor's degree, about 10 points below the Pennsylvania average of 26%.
Local retail density and voter turnout
Places with dense local retail within a mile tend to turn out at a higher rate; 15620, PA sits in the top tenth nationally on this measure. Nearby retail does not change how people vote; it reflects how urban and built-up a place is.
Why turnout in 15620 looks the way it does
Turnout in 15620 sits close to the national pattern. 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.