East Idaho Credit Union was founded in 1935 under the name Idaho Falls U.S. Government Employees Federal Credit Union. In 196 ... 3, the name was changed to East Idaho Federal Credit Union and in 1998 became East Idaho Credit Union. Today, it remains one of the oldest Credit Unions in Eastern Idaho. Of the sixteen credit unions started in 1935, only two remain today. East Idaho Credit Union currently operates in Idaho Falls, Ammon, Shelley, Rexburg, St. Anthony, Arco, Challis and Salmon and serves more than 30,000 members. read more