
Keansburg
- County:
- Monmouth County
- County Seat:
- No
- Area (mi²):
- 1.072
- State:
- New Jersey
Keansburg is a borough located in Monmouth County, New Jersey. Keansburg has a 2025 population of 9,584. Keansburg is currently declining at a rate of -0.33% annually and its population has decreased by -1.63% since the most recent census, which recorded a population of 9,743 in 2020.
The average household income in Keansburg is $96,131 with a poverty rate of 11.36%. The median age in Keansburg is 40.8 years: 39.6 years for males, and 43.6 years for females.