New Castle is an unincorporated community in Belmont County, in the U.S. state of Ohio.
New Castle was laid out in 1834.[1] An old variant name was Pilcher.[2] A post office called Pilcher was established in 1840, and remained in operation until 1907.[3]
39°53′30″N 81°4′33″W / 39.89167°N 81.07583°W