what county is amboy, nj
Sponsored Topics. South Amboy is a city in Middlesex County, New Jersey, on the Raritan Bay. As of the 2000 United States Census, the city population was 7,913. South Amboy, and Perth Amboy across the Raritan River, are collectively referred to as The Amboys. Signage for Exit 11 on the New Jersey Turnpike refers to The Amboys as a destination.