Blawenburg, NJ is a city located in Somerset 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 Blawenburg, New Jersey and it is 08504. The area code(s) for Blawenburg is 908.
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