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Ferndale is located in Whatcom County, WA. The population is 11,507, making Ferndale the 3rd largest city in Whatcom County. There are 9 public schools in Ferndale with an average Homefacts rating of B.
Ferndale, WA. Sponsored Topics. Ferndale is a city in Whatcom County, Washington, United States. The population was 11,415 at the 2010 census. First settled in 1872, Ferndale was given its name because of the ferns that once grew around the original school house.