Three Bridges, NJ is a city located in Hunterdon County, New Jersey and has a land area of 0.81 square miles (2.10 km2). The water area for the city is 0.01 square miles or 0.03 km2. There is one unique zip code in Three Bridges, New Jersey and it is 08887. The area code(s) for Three Bridges is 908.
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