The value of all land and rural real estate for sale in Ohio's Williams County recently was around $2 million, representing a combined 79 acres of land for sale in Williams County. Williams County ranks 88th in the Buckeye State for the total acreage of land currently advertised for sale. Of all locations in Williams County with farms, ranches, hunting land and other land for sale, Bryan had the most land for sale. Williams County is the 57th largest county (423 square miles) in Ohio. It's located in the Northwest Ohio region of Ohio.