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 west-southwest of downtown Eureka, at an elevation of above sea level. As of the 2020 census, Fairhaven had a population of 165.

The Rolph post office operated from 1918 to 1921. That name was for Governor James Rolph of California. The name "Fairhaven" was taken from Fair Haven, a neighborhood in New Haven, Connecticut.

Simpson historically operated plywood and pulp operations in Fairhaven. Green Diamond, spun off from Simpson, continues to operate a wood chip export facility in Fairhaven.

Demographics

Fairhaven first appeared as a census designated place in the 2020 U.S. census.

+Fairhaven CDP, California – Racial and ethnic compositionRace / Ethnicity (NH = Non-Hispanic)Pop 20202020White alone (NH) 125 75.76%Black or African American alone (NH) 2 1.21%Native American or Alaska Native alone (NH)21.21%Asian alone (NH) 63.64%Native Hawaiian or Pacific Islander alone (NH)10.61%Other race alone (NH)1 0.61%Mixed race or Multiracial (NH) 21 12.73%Hispanic or Latino (any race)7 4.24%Total165 100.00%

References Leigh H. Irvine, History of Humboldt County California (Historic Record Company, Los Angeles, California, 1915)