Land for sale in Calhoun County recently totaled nearly $6 million and approximately 1,000 acres. Calhoun County ranks 83rd out of 99 counties in the Hawkeye State for the total number of acres of land currently advertised for sale. Of all locations in Calhoun County with farms, ranches, and rural real estate for sale, Manson had the most land for sale. Its economy is defined as agricultural, with 826 farms recorded in the county during the most recent U.S. Census. Farming activities in Calhoun County generate annual revenues of $30 million, most of which is from crops. Calhoun County is Iowa's 52nd largest county (572 square miles). It's located in the Western Iowa region of the state.