Oldwick is an unincorporated community and census-designated place (CDP) located within Tewksbury Township in Hunterdon County, in the U.S. state of New Jersey. The area is served as United States Postal Service ZIP Code 08858. As of the 2020 census, Oldwick had a population of 445.
Oldwick was formerly known as New Germantown. It has a mixture of Victorian, Federal, New England and Georgian style homes, and is protected by historic legislation. Historic sites within Oldwick include the Kline Farmhouse and the Oldwick Historic District.
Zion Lutheran Church in Oldwick was the oldest Lutheran parish in New Jersey.
Oldwick is the corporate headquarters of the A. M. Best rating agency, and is the location of Mane Stream, formerly the Somerset Hills Handicapped Riding Center for adaptive riding and equine assisted therapy.
On April 5, 2024, Oldwick, alongside Lebanon and Tewksbury Township, became epicenters of the 2024 New Jersey earthquake, a rare 4.8 magnitude earthquake that shook much of the Northeast United States.
Oldwick was first listed as a census designated place in the 2020 U.S. census.
As of the 2020 United States census, the population was 445.
People who were born in, residents of, or otherwise closely associated with Oldwick include: