16820 leans heavily Republican by roughly 42 points: about 29% of voters vote Democratic and 71% Republican.
About 61% of adults in 16820 typically vote, near the U.S. average of about 62%. Among adults in 16820, ~18% vote Democratic, ~43% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How 16820 compares
Among zip codes within 15 miles, 16820 leans more Republican than 3 of 22 neighbors.
16820 runs about 41 points more Republican than Pennsylvania as a whole.
Why 16820 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 16820, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 16820, about 99% of residents are non-Hispanic white, about 26 points above the U.S. average of 72%; about 18% of adults hold a bachelor's degree, about 7 points below the Pennsylvania average of 26%.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 16820, 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 16820 looks the way it does
Areas with low high-school completion turn out at lower rates. About 72% of adults in 16820 have completed high school, about 18 points below the U.S. average of 90%. 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.