South New Castle Flag

South New Castle

County:
Lawrence County
County Seat:
No
Area (mi²):
0.324
State:
Pennsylvania

South New Castle is a borough located in Lawrence County, Pennsylvania. South New Castle has a 2026 population of 636. South New Castle is currently declining at a rate of -0.47% annually and its population has decreased by -2.15% since the most recent census, which recorded a population of 650 in 2020.

636
Total Population
1,962
Density (mi²)
-3 -0.47%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)