16633 is a Republican stronghold. About 15% of voters here vote Democratic and 85% Republican.
About 58% of adults in 16633 typically vote, near the U.S. average of about 62%. Among adults in 16633, ~9% vote Democratic, ~49% Republican, and ~42% don't vote. The map below shows estimated turnout by block group.
How 16633 compares
Among zip codes within 15 miles, 16633 leans more Republican than 15 of 28 neighbors.
16633 runs about 69 points more Republican than Pennsylvania as a whole.
Why 16633 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 16633, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 5% of adults in 16633 hold a bachelor's degree, about 21 points below the Pennsylvania average of 26%. Car-dependent areas vote Republican, and about 85% of residents in 16633 drive to work alone, above 88% of zip codes. A high family-household share predicts Republican voting, and about 80% of households in 16633 are family households, above 92% of zip codes.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 16633, PA sits in the bottom quarter nationally 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 16633 looks the way it does
Areas with low high-school completion turn out at lower rates. About 87% of adults in 16633 have completed high school, below 75% of 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.