Rosemont is an unincorporated community located within Delaware Township in Hunterdon County, in the U.S. state of New Jersey.Locality Search, State of New Jersey. Accessed December 14, 2014. Its ZIP code is 08556. Situated at the top of a small hill, the center of the community lies along Kingwood Stockton Road (County Route 519), near its intersections with Raven Rock Rosemont Road and Rosemont Ringoes Road (CR 604). The surrounding area consists of farmland (which is listed on the National Register of Historic Places) and residential properties. The center of the settlement features residences, a post office, and an antique shop.

Notable people

People who were born in, residents of, or otherwise closely associated with Rosemont include: Willard H. Allen (1893–1957), poultry scientist who served as New Jersey secretary of agriculture from 1938 to 1956."Willard Allen, Ex-Jersey Official, Dies; Was Agriculture Secretary for 18 Years", The New York Times, February 27, 1957. Accessed December 24, 2021. "A resident of Rosemont, Mr. Allen retired from the state post in February 1956, because of ill health." George Newton Best (1846–1926), bryologist, expert on moss taxonomy and second president of the Sullivant Moss Society."News Notes", p. 104 in Torreya, Volumes 24-26. Accessed December 24, 2021. "Dr. George Newton Best, one of the most widely-known physicians of Hunterdon County, Penna. and a scientist of national repute, died at his home in Rosemont on the 18th of June." Lloyd Wescott (1907–1990), agriculturalist, civil servant and philanthropist Paul Whiteman (1890–1967), bandleader, composer, orchestral director and violinist"Architect Transforms a Mansion With Modern Lines and Lighting", The New York Times, September 24, 1960. Accessed October 7, 2026. "Paul Whiteman's former home and showplace in Rosemont, N. J., was altered recently by architect William M. Hunt to meet the personal needs and to house the outstanding art collection of Mr. and Mrs. Lloyd Wescott."

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