17520 leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 98% of adults in 17520 typically vote, above the U.S. average of about 62%. Among adults in 17520, ~46% vote Democratic, ~52% Republican, and ~2% don't vote. The map below shows estimated turnout by block group.
How 17520 compares
Among zip codes within 15 miles, 17520 leans more Republican than 6 of 39 neighbors.
17520 runs about 5 points more Republican than Pennsylvania as a whole.
Why 17520 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 17520, not a ranked or complete list of what matters most.
17520 votes Republican even though it is densely developed (about 88%, far above the Pennsylvania average of 33%). Here an older population outweighs the Democratic lean that density usually predicts.
Park access and Republican lean
Places with low park coverage tend to lean Republican; 17520, PA sits in the bottom tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 17520 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 17520 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 70%, about 10 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 93% of households in 17520 own their home, compared to around 73% in nearby 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.