FirstBank NW Corp. serves Eastern Washington, Northern Idaho, Eastern Oregon and Southwest Idaho through its FirstBank Northwest subsidiary.

Founded in Lewiston in 1920 as a mutual savings and loan association, the bank converted to the stock form of ownership on July 1, 1997 and converted to a Washington State savings bank charter February 2, 1998. FirstBank expanded into eastern Oregon during 2003 with the acquisition of Pioneer Bank, FSB, effectively doubling its asset size and the geographic area served by the bank. FirstBank's general market area includes Northern Idaho, Eastern Washington, and Eastern Oregon, as well as Ada and Canyon Counties in Southwest Idaho.

Administratively headquartered at 1300 16th Avenue in Clarkston, Washington, FirstBank operates twenty branches located in Lewiston, Lewiston Orchards, Moscow, Grangeville, Coeur d'Alene, Post Falls, Hayden, and Boise Idaho, in Clarkston, Spokane and Liberty Lake, Washington, and in Baker City, La Grande, Island City, Ontario, Vale, John Day, Burns, Enterprise, and Pendleton, Oregon. The bank operates real estate loan production offices in Lewiston, Coeur d'Alene and Boise, Idaho, Spokane, Washington and Baker City, Oregon, and commercial and agricultural production centers in Lewiston, Coeur d'Alene and Boise Idaho, in Spokane, Washington, and in Baker City, Oregon. Solomon Smith Barney operates Investment Centers in the bank's Clarkston, Liberty Lake, Ontario, Baker and La Grande branches.

Common shares of FirstBank NW Corp trade on NASDAQ's National Market System under the symbol FBNW.