Listings >> Banks & Related Services Great Lakes Federal Credit Union Great Lakes Federal Credit Union is a financial institution whose membership is based on family and medical personnel. (989) 893-2831 www.greatlakesfcu.com Great Lakes Federal Credit Union is a financial institution built on community and committed to celebrating its members’ financial success and providing an extraordinary level of service. Washington Avenue 415 Bay City 48708 MI US Get directions Photo gallery All photos (1) Washington Avenue 415 Bay City 48708 MI US Get directions Photo gallery All photos (1)