Plainfield City Hall is located at 515 Watchung Avenue, Plainfield, NJ 07060; phone: 908-226-2571.
Settled by Quakers in 1684, Plainfield was incorporated as a township in 1847 and as a city in 1869.
Plainfield as described in 1939 
Plainfield is a busy commuters' town (New York City) with smart shops and substantial manufacturers. Here are all types of dwellings from the huge, French-roofed, high-ceiling Victorian mansion of the 1870s to the most modern Cape Cod type cottage.