18641 leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% Republican.
About 78% of adults in 18641 typically vote, above the U.S. average of about 62%. Among adults in 18641, ~34% vote Democratic, ~44% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How 18641 compares
Among zip codes within 15 miles, 18641 leans more Republican than 23 of 37 neighbors.
18641 runs about 9 points more Republican than Pennsylvania as a whole.
Why 18641 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 18641, not a ranked or complete list of what matters most.
18641 votes Republican even though it is densely developed (about 92%, far above the Pennsylvania average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Park access and Republican lean
Places with low park coverage tend to lean Republican; 18641, PA sits below the national average on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 18641 looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in 18641 have completed high school, about 5 points above the Pennsylvania average of 91%. 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.