Humboldt County, California was established on May 12, 1853 and named for Humboldt Bay, which is named for German naturalist, Alexander von Humboldt! Its county seat is Eureka, and its fair is held in Ferndale! You might recognize Redwood National Park, the Willow Creek – China Flats Museum, Bluff Creek, and the Humboldt Bay National Wildlife Refuge, which are located in this county! Humboldt County has declared itself the Bigfoot Capital of the World!