16620 is a Republican stronghold. About 19% of voters here vote Democratic and 81% Republican.
About 61% of adults in 16620 typically vote, near the U.S. average of about 62%. Among adults in 16620, ~12% vote Democratic, ~49% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How 16620 compares
Among zip codes within 15 miles, 16620 leans more Republican than 24 of 35 neighbors.
16620 runs about 60 points more Republican than Pennsylvania as a whole.
Why 16620 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 16620, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 15% of adults in 16620 hold a bachelor's degree, about 11 points below the Pennsylvania average of 26%.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 16620, PA sits below the national average on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 16620 looks the way it does
Turnout in 16620 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.