The value of all ranches, farms, hunting land and other rural land and acreage for sale in Washita County, Oklahoma, recently was around $5 million, representing a combined 299 acres of land for sale in Washita County. Washita County ranks 63rd out of 77 counties in the state for the total acreage of land currently advertised for sale. Among cities in Washita County with land for sale, Sentinel had the most land for sale. Economically speaking, Washita County's is largely dependent on mining and mineral extraction-related businesses and services. Washita County is Oklahoma's 19th largest county (1,008 square miles). It's located in the Great Plains Country Oklahoma region of Oklahoma.