The value of all land and rural real estate for sale in Mahaska County recently was approximately $28 million, representing a combined 973 acres of land for sale in Mahaska County. Mahaska County ranks 64th in the state for the combined amount of land currently advertised for sale. Among cities in Mahaska County with ranches, farms, hunting land and other rural land and acreage for sale, Oskaloosa featured the most land for sale. Mahaska County is the 44th biggest county (573 square miles) in Iowa. It's located in the Central Iowa region of the state.