Pacific is a city in King and Pierce counties in the U.S. state of Washington. Located primarily in King County, the population was 6,606 at the 2010 census. Like its northern neighbor Algona, Pacific 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 river banks along Pacific City Park, creating a temporary 25-acre (100,000 m2) lake.