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is a city in King and Pierce counties in the U.S. state of Washington. Located primarily in King County, the population was 5,527 at the 2000 census. Like its northern neighbor Algona, Pacfic is sometimes mistaken for a part of Auburn.
Platted August 10, 1906 by real estate promoter Clarence Dayton Hillman as "C.D. Hillman's Pacific City Addition to the City of Seattle," Pacific was officially incorporated on August 10, 1909.
Record-breaking rains in November 2006 pushed the White River over its levy along Pacific City Park, creating a temporary lake.
In January 2009, release of stormwaters from the Mud Mountain flood-control dam caused even greater flooding, inundating more than a hundred homes.