1st Security Bank of Washington
BankingWashington, United States201-500 Employees
1st Security Bank of Washington is a mid-sized regional bank headquartered in Mountlake Terrace, Washington. It has served customers across multiple Washington counties since 1936. The bank operates twenty-one neighborhood branches and relies on relationship-based banking with customers, small businesses, and community partners, while offering lending programs for home buyers, local contractors, builders, mortgage companies, and boat dealerships. The bank serves King, Kitsap, Pierce, Lewis, Thurston, Grays Harbor, Snohomish, Clallam, and Jefferson counties, and positions itself as a Northwest community lender. Its presence is rooted in Mountlake Terrace, with branch teams actively involved in local events and sponsorships. In early 2026, Pacific West Bank merged with Fsbwahomelending, the home lending arm associated with the bank, on February 1, 2026, signaling an expansion of its home lending activities.