arcata is in what county
Humboldt County is a county in the U.S. state of California. As of the 2010 census, the population was 134,623. The county seat is Eureka. Humboldt County comprises the Eureka-Arcata-Fortuna, CA Micropolitan Statistical Area. It is located on the far North Coast 200 miles north of San Francisco. Its primary population centers of Eureka, the site of College of the Redwoods main campus, and the smaller college town of Arcata, site of Humboldt State University, are located adjacent to Humboldt Bay, California's second largest natural bay.