Humboldt County is a large region of big mining and mineral extraction interests alongside farming and ranching. The county seat of Winnemucca has grown from an 1800s trading post for westward-bound wagon trains along the Humboldt Trail to a hub for the area?s energy and agricultural interests as well as jumping-off for numerous outdoor adventures including fishing, hunting and ATVing. The total value of land for sale in Humboldt County recently on Land.com was nearly $195 million. This represents approximately 100,000 acres of farms, ranches, and rural real estate for sale in Humboldt County. Humboldt County ranks 24th in the Land of Milk and Honey for the total acreage of land currently advertised for sale. Among cities in Humboldt County with land for sale, Eureka had the most land for sale. Humboldt County is California's 13th largest county (4,052 square miles). It's located in the North Coast California region of California.