
South Amboy
- County:
- Middlesex County
- County Seat:
- No
- Area (mi²):
- 1.538
- State:
- New Jersey
South Amboy city is located in Middlesex County, New Jersey. South Amboy city has a 2025 population of 10,237. South Amboy city is currently declining at a rate of 0% annually and its population has increased by 9.17% since the most recent census, which recorded a population of 9,377 in 2020.
The average household income in South Amboy city is $112,794 with a poverty rate of 7.51%. The median age in South Amboy city is 42.3 years: 46.7 years for males, and 40.7 years for females.