Hadonfield is a borough located in Camden County, New Jersey. As of the United States 2000 Census, the borough had a total population of 11,659. Haddonfield was incorporated as a borough by an Act of the New Jersey Legislature on April 6, 1875, within portions of Haddon Township, based on the results of a referendum held that same day. The borough separated from Haddon Township as an independent municipality in 1894.