Waddington is a populated place in Humboldt County, California, United States.
It is located on the floodplain along the south side of the Eel RiverDeLorme California Atlas and Gazetteer (1st edition) (2008) map 38 southwest of Fortuna, at an elevation of .
A post office operated at Waddington from 1891 to 1940. The name honors Alexander Waddington, a local merchant.
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