The township, was formed on April 10, 1797, from portions of Newton Township, and was incorporated on February 21, 1798, as one of New Jersey’s initial 104 townships by an Act of the New Jersey Legislature. Portions of the township were taken to form Lafayette Township and Sparta Township (both established on April 14, 1845), along with Branchville (March 9, 1898), which is completely surrounded by the township. The Augusta area of the township was once a bustling village with a stage-coach stop at the corner of nearby Plains Road.
Although the township has grown through recent residential development, a number of horse and dairy farms remain; It is also the home of the Sussex County Fairgrounds, which hosts the annual Sussex County Farm & Horse Show. Frankford Township is said to be named after “Frankford”, a neighborhood of Philadelphia, after a visitor from that area came to help out at the rural school in the township.
Frankford Township has a total area of 35.44 square miles, is home to an estimated 5,565 residents and boasts two natural lakes, Culver’s Lake and Lake Owassa, nestled below the Kittatinny Mountain.