Grassy Meadows, West Virginia  Grassy Meadows is an unincorporated community in Greenbrier County, West Virginia, United States. Grassy Meadows is east-southeast of Meadow Bridge. Grassy Meadows had a post office, which opened on June 15, 1858, and closed on June 25, 2011. The community most likely derives its name in part from the nearby Meadow River.