46 square miles, bounded on the north, west and south by the Raritan and Millstone Rivers, on the east by State Highway 27 (except for the Little Rocky Hill section of the Township where the boundary is Old Road, former State Highway 27 alignment).
Encompasses the historic and geographic areas of Zarephath, East Millstone, Franklin Park, Griggstown, Middlebush, Somerset and portions of Kingston and Little Rocky Hill.
POPULATION – 2000 Census – 50,903
Somerset 08873 (Post Office Boxes 08875)
East Millstone 08873 (Post Office Boxes 08875)
Franklin Park 08823
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