16617 leans heavily Republican by roughly 46 points: about 27% of voters vote Democratic and 73% Republican.
About 81% of adults in 16617 typically vote, above the U.S. average of about 62%. Among adults in 16617, ~22% vote Democratic, ~59% Republican, and ~19% don't vote. The map below shows estimated turnout by block group.
How 16617 compares
Among zip codes within 15 miles, 16617 leans more Republican than 6 of 23 neighbors.
16617 runs about 43 points more Republican than Pennsylvania as a whole.
Why 16617 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 16617, not a ranked or complete list of what matters most.
16617 votes Republican even though it is densely developed (about 67%, far above the Pennsylvania average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Housing overcrowding and voter turnout
Places with low overcrowding tend to turn out at a higher rate; 16617, PA sits in the bottom tenth nationally on this measure.
Why turnout in 16617 looks the way it does
Turnout in 16617 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.