15520 is a Republican stronghold. About 18% of voters here vote Democratic and 82% Republican.
About 67% of adults in 15520 typically vote, near the U.S. average of about 62%. Among adults in 15520, ~12% vote Democratic, ~55% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How 15520 compares
Among zip codes within 15 miles, 15520 leans more Republican than 24 of 27 neighbors.
15520 runs about 63 points more Republican than Pennsylvania as a whole.
Why 15520 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 15520, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 15520, about 99% of residents are non-Hispanic white, about 27 points above the U.S. average of 72%; about 17% of adults hold a bachelor's degree, about 8 points below the Pennsylvania average of 26%. Car-dependent areas vote Republican, and about 84% of residents in 15520 drive to work alone, above 84% of zip codes. A high family-household share predicts Republican voting, and about 92% of households in 15520 are family households, in the top fraction of zip codes.
Renting and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; 15520, PA sits in the bottom quarter nationally on this measure.
Why turnout in 15520 looks the way it does
Homeowners vote more often than renters. About 90% of households in 15520 own their home, about 11 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.