
Franklin
- County:
- Sussex County
- County Seat:
- No
- Area (mi²):
- 4.356
- State:
- New Jersey
Franklin is a borough located in Sussex County, New Jersey. Franklin has a 2025 population of 5,084. Franklin is currently growing at a rate of 0.75% annually and its population has increased by 3.88% since the most recent census, which recorded a population of 4,894 in 2020.
The average household income in Franklin is $91,075 with a poverty rate of 8%. The median age in Franklin is 51.6 years: 53.2 years for males, and 49.4 years for females.