Fairhaven (formerly Rolph) is an unincorporated community and census-designated place (CDP) adjacent to Humboldt Bay in Humboldt County, California, United States.

It is located 2.25 miles (3.6 km) west-southwest of downtown Eureka,[4] at an elevation of 10 feet (3.0 m) above sea level.

[1] In 1867, Hans Ditlev Bendixsen opened a ship building yard in Fairhaven.

Thayer which is now preserved at the San Francisco Maritime National Historical Park.

[7] Green Diamond, spun off from Simpson, continues to operate a wood chip export facility in Fairhaven.