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 value of all farms, ranches, hunting land and other land for sale in Humboldt County, California, recently was nearly $179 million, representing a total of 10,792 acres of land for sale in Humboldt County. Humboldt County ranks 24th in the El Dorado State for the total number of acres of land currently advertised for sale. Of all locations in Humboldt County with land and rural real estate for sale, Eureka had the most land for sale. Humboldt County is California's 13th biggest county (4,052 square miles). It's located in the North Coast California region of California.