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About Cosmopolis, Washington

Cosmopolis is a city in Grays Harbor County, Washington, United States. The population was 1,649 at the 2010 census.

News from Cosmopolis

Cosmopolis Facts

  • Population Total: 1649
  • Square Miles: 1.4
  • Area Code: 360
  • Elevation: 26
  • Postal Codes: 98537
  • Timezone: Pacific