Sergeantsville, NJ is a city located in Hunterdon County, New Jersey and has a land area of 0.00 square miles (0.00 km2). The water area for the city is 0.00 square miles or 0.00 km2. There is one unique zip code in Sergeantsville, New Jersey and it is 08557. The area code(s) for Sergeantsville is 908.
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