The value of farms, ranches, and rural real estate for sale in Miami County recently on Land.com was almost $71 million. This represents nearly 1,000 acres of ranches, farms, hunting land and other rural land and acreage for sale in Miami County. Miami County ranks 18th in the Buckeye State for the combined amount of land currently advertised for sale. Of all ranches, farms, hunting land and other rural land and acreage for sale in Miami County, Troy featured the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Miami County. Miami County is the 75th biggest county (409 square miles) in Ohio. It's located in the Southwest Ohio region of Ohio.