
South Bethlehem
- County:
- Armstrong County
- County Seat:
- No
- Area (mi²):
- 0.152
- State:
- Pennsylvania
South Bethlehem is a borough located in Armstrong County, Pennsylvania. South Bethlehem has a 2025 population of 467. South Bethlehem is currently declining at a rate of -0.85% annually and its population has decreased by -3.91% since the most recent census, which recorded a population of 486 in 2020.
The average household income in South Bethlehem is $62,331 with a poverty rate of 14.52%. The median age in South Bethlehem is 52 years: 50.5 years for males, and 54.9 years for females.