Harborstone Credit Union has branch locations in King, Pierce, and Thurston counties to serve our members. Which means we're big enough to offer a wide variety of products and services yet small enough to offer a pleasant and personable atmosphere. When you join Harborstone, you become a part owner of our not-for-profit organization. As a community credit union, anyone in Washington State can join. From our roots as McChord Credit Union (founded in 1955 on McChord Air Force Base) and Prevail Credit Union (founded in 1940 as King County Employees Credit Union) to our combined bright future as Harborstone Credit Union, we provide financial services and a trusted source of financial help when needed for the membership we serve.