Betty MacMillan is a community leader in the Minneapolis area. She is President of the WEM Foundation, a former member of the Smithsonian National Board. She serves on the Board and Executive Committee of the Minnesota Historical Society and was also on the advisory board of NFL Football team, the Minnesota Vikings. Mrs. MacMillan is a member of the Woodhill Country Club in Wayzata, the Minneapolis Club, the Lake Minnetonka Garden Club, and the Johns Island Club in Vero Beach, Florida. Mrs. MacMillan resides in Wayzata, MN.