18102 leans heavily Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 45% of adults in 18102 typically vote, below the U.S. average of about 62%. Among adults in 18102, ~30% vote Democratic, ~16% Republican, and ~54% don't vote. The map below shows estimated turnout by block group.
How 18102 compares
Among zip codes within 15 miles, 18102 leans more Democratic than 53 of 54 neighbors.
18102 runs about 32 points more Democratic than Pennsylvania as a whole. Pennsylvania is roughly evenly split, and 18102 sits clearly on the Democratic side.
Politics vary noticeably by block within 18102. The southeast side is the most Democratic-leaning (D+37) and the northwest side is the least Democratic-leaning (D+14), a spread of about 23 points.
Why 18102 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 18102, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 18102 live in densely developed areas, about 63 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 52% of adults in 18102 have never been married, above 96% of zip codes. 18102 runs against the grain of Pennsylvania, a Democratic-leaning outlier in a roughly evenly split state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 18102, PA sits in the bottom tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 18102 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 18102 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 45%, about 19 points below the Pennsylvania average of 64%. Renters vote less often than owners, and about 66% of households in 18102 rent, compared to around 40% in nearby zip codes. Low high-school completion lines up with lower turnout, and about 76% of adults in 18102 have completed high school, below 95% 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.