Community 1st Credit Union has opened its branch and headquarters building on Ross Loop in DuPont. The 17,000-square-foot building features a walk-up ATM, drive-up lanes, a drive-up ATM and Saturday hours. Founded in 1925, Community 1st Credit Union is the oldest credit union in Washington. Originally Seattle Postal Employees Credit Union, Community 1st now offers membership to anyone who lives, works or worships in Washington. The credit union also provides business-related banking.