
Mannington township
- County:
- Salem County
- County Seat:
- No
- Area (mi²):
- 33.883
- State:
- New Jersey
Mannington township is located in Salem County, New Jersey. Mannington township has a 2025 population of 1,458. Mannington township is currently declining at a rate of -0.34% annually and its population has decreased by -0.95% since the most recent census, which recorded a population of 1,472 in 2020.
The average household income in Mannington township is $133,071 with a poverty rate of 4.49%. The median age in Mannington township is 39.7 years: 38.5 years for males, and 42.5 years for females.