Cranford is a township in Union County, New Jersey, United States. As of the 2010 United States Census, the township's population was 22,625, reflecting an increase of 47 (+0.2%) from the 22,578 counted in the 2000 Census, which had in turn declined by 55 (−0.2%) from the 22,633 counted in the 1990 Census.New Jersey Monthly magazine ranked Cranford as its 34th best place to live in its 2010 rankings of the "Best Places To Live".HistoryCranford was incorporated as a township by an act of the New Jersey Legislature on March 14, 1871, from portions of the Townships of Clark, Linden, Springfield, Union and Westfield. Portions of the township were taken to form Garwood (March 19, 1903) and Kenilworth (March 13, 1907). The township's name is said to derive from the Crane family, including John Crane, who built a mill in 1720 along the Rahway River.Historic preservationHistoric sites in the township are overseen by the Cranford Historic Preservation Advisory Board, whose purpose is to identify, record and maintain a system for survey and inventory of all building sites, places and landmarks and structures of historical or architectural significance based on the Secretary of the Interior's Standards and Guidelines for Archeology and Historic Preservation.