18851 is a Republican stronghold. About 20% of voters here vote Democratic and 80% Republican.
About 82% of adults in 18851 typically vote, above the U.S. average of about 62%. Among adults in 18851, ~16% vote Democratic, ~66% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.
How 18851 compares
Among zip codes within 15 miles, 18851 leans more Republican than 11 of 14 neighbors.
18851 runs about 58 points more Republican than Pennsylvania as a whole.
Why 18851 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 18851, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 85% of residents in 18851 drive to work alone, about 11 points above the U.S. average of 74%.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 18851, 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 18851 looks the way it does
Homeowners vote more often than renters. About 88% of households in 18851 own their home, about 9 points above the Pennsylvania average of 79%. 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.