About Southern Lakes Credit Union. Founded in 1935 on the principles of "People Helping People," Southern Lakes is headquartered in Kenosha, WI on the shores of Lake Michigan. We now proudly serve 10,000 members in Southeastern Wisconsin and Northeastern Illinois through our branches in Kenosha, WI and Elkhorn, WI as well as through online means. We work to meet our members where they are and to help them achieve their financial goals. Come join ...