Hoquiam is a city in Grays Harbor County, Washington, United States. It borders the city of Aberdeen at Myrtle Street, with Hoquiam to the west. The two cities share a common economic history in lumbering and exporting, but Hoquiam has maintained its independent identity. It shares a long rivalry with its more populated neighbor, especially in high school sports. Hoquiam was incorporated on May 21, 1890.