
New Castle township
- County:
- Lawrence County
- County Seat:
- No
- Area (mi²):
- 12.257
- State:
- Pennsylvania
New Castle township is located in Lawrence County, Pennsylvania. New Castle township has a 2025 population of 350. New Castle township is currently growing at a rate of 0.29% annually and its population has increased by 0.86% since the most recent census, which recorded a population of 347 in 2020.
The average household income in New Castle township is $75,875 with a poverty rate of 5.88%. The median age in New Castle township is 37.8 years: 38.8 years for males, and 35.7 years for females.