Frelinghuysen Township is a small, rural community located in Warren County, New Jersey. It covers an area of approximately 30 square miles and is known for its scenic landscapes, including forests and farmland. The township is primarily residential, with a mix of single-family homes and open spaces. Established in the early 19th century, Frelinghuysen Township has a rich history that reflects the development of rural New Jersey. The township is named after John Frelinghuysen, a prominent local figure. Residents enjoy a quiet lifestyle, with access to outdoor activities such as hiking and fishing in the surrounding natural areas.