Fibre Federal Credit Union has been open since 1937. It's the 15th largest credit union in Washington with assets totaling $1.11 Billion and providing banking services to more than 104,000 members. Membership: The credit union is a community-based financial institution. People living, working, or worshipping in the credit union's geographic area can become a member and access banking services. Membership is also open to immediate family of current members.