Rosemont is an unincorporated community in Mahoning County, in the U.S. state of Ohio.
[1] A post office called Rosemont was established in 1888, and remained in operation until 1928.
[2] Besides the post office, Rosemont had a country store, operated by D. L.
[3] Early industries at Rosemont included two mills and two coal mines.
This Mahoning County, Ohio state location article is a stub.