
Long Valley
- County:
- Morris County
- County Seat:
- No
- Area (mi²):
- 4.566
- State:
- New Jersey
Long Valley is a CDP located in Morris County, New Jersey. Long Valley has a 2025 population of 2,088. Long Valley is currently growing at a rate of 0.68% annually but its population has decreased by -10.27% since the most recent census, which recorded a population of 2,327 in 2020.
The average household income in Long Valley is $148,110 with a poverty rate of 7.36%. The median age in Long Valley is 49.4 years: 51 years for males, and 47.6 years for females.