There was a total of approximately $55 million of farms and ranches for sale in Missouri's Buchanan County recently on Land.com. The total of all Buchanan County land and rural real estate for sale was around 2,000 acres. Buchanan County ranks 66th out of 115 counties in the 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 Buchanan County, Saint Joseph featured the most land for sale. Manufacturing and related services are the largest economic sectors in Buchanan County. Buchanan County is the 109th biggest county (415 square miles) in Missouri. It's located in the Northwest Missouri region of Missouri.