South Bethlehem is a Republican stronghold. About 16% of voters here vote Democratic and 84% Republican.
About 79% of adults in South Bethlehem typically vote, above the U.S. average of about 62%. Among adults in South Bethlehem, ~13% vote Democratic, ~67% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How South Bethlehem compares
Among cities within 25 miles, South Bethlehem leans more Republican than 128 of 165 neighbors.
South Bethlehem runs about 66 points more Republican than Pennsylvania as a whole.
Why South Bethlehem leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for South Bethlehem, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In South Bethlehem, about 96% of residents are non-Hispanic white, about 24 points above the U.S. average of 72%; about 13% of adults hold a bachelor's degree, about 13 points below the Pennsylvania average of 26%.
Homeownership and voter turnout
Places with renter-heavy households tend to turn out at a lower rate; South Bethlehem, PA sits in the bottom quarter nationally on this measure.
Why turnout in South Bethlehem looks the way it does
Turnout in South Bethlehem sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- New Bethlehem, PA R+61
- Distant, PA R+68
- Seminole, PA R+67
- Oak Ridge, PA R+70
- St. Charles, PA R+69
- Putneyville, PA R+69
- Hawthorn, PA R+65
- Fairmount City, PA R+64
- Smithland, PA R+70
- Deanville, PA R+68
Cities with Similar Populations
- Urbank, MN R+43
- Crawley, WV R+58
- Mount Victory, KY R+70
- Salvador, CA D+26
- Parkman, ME R+42
- Fultonham, OH R+60
- Trevilians, VA R+26
- Wayside, WI R+50
- Charleston, UT R+45
- Kitchings Mill, SC R+50
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.