King Salmon is an unincorporated community in Humboldt County, California, United States, located on the shore of Buhne Point directly across from the entrance to Humboldt Bay, slightly south of Eureka and 1 mile north of Fields Landing, at an elevation of 3 feet. It has a Eureka zipcode and area code and is part of Greater Eureka although outsid…King Salmon is an unincorporated community in Humboldt County, California, United States, located on the shore of Buhne Point directly across from the entrance to Humboldt Bay, slightly south of Eureka and 1 mile north of Fields Landing, at an elevation of 3 feet. It has a Eureka zipcode and area code and is part of Greater Eureka although outside the city limits.