The Township of Franklin was incorporated on January 27, 1820 when 72,000 acres of portions of Woolwich and Greenwich Townships were combined. Glassboro, Clayton, Newfield, and Elk were originally part of this tract, but became independent municipalities by 1924.
Farms, orchards, glasshouses, gristmills and saw mills were an important part of the economy. In 1861, the Woodbury-to-Glassboro rail line carried passengers and freight from Camden to Millville, and a short time later, to Cape May. Franklinville, Iona, Malaga, and Newfield had stations along the way.
A growing population needed schools, and Delsea Regional was built in 1960, with Delsea Regional Middle School following several years later. Small, localized elementary schools were replaced with larger facilities: Mary F. Janvier School, Main Road School, and Caroline Reutter School.