Allamuchy, NJ

ZIP code 07820 belongs to Hackettstown, New Jersey, situated in Warren County. This charming town is home to Centenary University, renowned for its academic excellence. Hackettstown is also famous for being the home of the Mars Chocolate North America headquarters, where the world-famous M&M's are produced. The zip code encompasses a mix of residential neighborhoods, local businesses, and cultural attractions that make it a dynamic community.