16634 is a Republican stronghold. About 18% of voters here vote Democratic and 82% Republican.
About 64% of adults in 16634 typically vote, near the U.S. average of about 62%. Among adults in 16634, ~12% vote Democratic, ~53% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How 16634 compares
Among zip codes within 15 miles, 16634 leans more Republican than 7 of 27 neighbors.
16634 runs about 62 points more Republican than Pennsylvania as a whole.
Why 16634 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 16634, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 10% of adults in 16634 hold a bachelor's degree, about 16 points below the Pennsylvania average of 26%. Rural areas with a high white share vote Republican. Non-Hispanic white share in 16634 is about 94%, about 22 points above the U.S. average of 72%.
Population density and Republican lean
Places with low population density tend to lean Republican; 16634, PA sits below the national average on this measure.
Why turnout in 16634 looks the way it does
Turnout in 16634 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.