Hibernia, NJ

ZIP code 07842 covers the town of Hackettstown in Warren County, New Jersey. This area is home to Centenary University, a private liberal arts institution with a historic campus. Hackettstown is also known for its iconic landmark, the Mars Chocolate North America headquarters, where popular confectioneries like M&M's are produced. Additionally, visitors can explore the picturesque Hackettstown Historic District, filled with charming architecture and quaint shops.