The value of all farmsand rural real estate for sale in Gilmer County, West Virginia, recently was around $3 million, representing a total of 375 acres of land for sale in Gilmer County. Gilmer County ranks 47th in the state for the combined amount of land currently advertised for sale. Of all farms and rural real estate for sale in Gilmer County, Glenville had the most land for sale. From an economic perspective, government and state-level services contribute most to Gilmer County's overall GDP. Gilmer County is West Virginia's 39th largest county (340 square miles). It's located in the Northwest West Virginia region of the state.