The value of farms, ranches, hunting land and other land for sale in Oklahoma's Harmon County recently on Land.com was around $19 million. This represents around 100,000 acres of farms and ranches for sale in Harmon County. Harmon County ranks 75th out of 77 counties in the Sooner State for the total number of acres of land currently advertised for sale. Among cities in Harmon County with farms, ranches, and rural real estate for sale, Vinson had the most land for sale. Its economy is defined as agricultural, with 366 farms recorded in the county during the most recent U.S. Census. Farming activities in Harmon County generate annual revenues of $5 million, most of which is from crops. Harmon County is Oklahoma's 71st largest county (538 square miles). It's located in the Great Plains Country Oklahoma region of the state.