In 1926 a group of forward-thinking postal employees formed a financial cooperative, giving birth to St. Paul Postal Employees Credit Union where membership was limited to only postal employees. As the credit union thrived, membership was opened to family members, select employee groups, and those who joined by donating to a local Scholarship fund. In 2002, then Postal Credit Union, membership was opened to residents of Washington, Ramsey and Dakota counties and later to Anoka, Chisago and Hennepin counties. Today, anyone can become a member.

Ideal Credit Union boasts a diverse membership of more than 50,000 and has 6 convenient locations in Eagan, Hugo, Inver Grove Heights, North St. Paul, Stillwater and Woodbury.