Since 1928, CPOECU has helped Post Office employees reach their financial goals. https://t.co/CtRCXp9mh4 CPOECU is a not-for-profit, member-owned financial cooperative whose mission is to assist in your financial needs. ILLINOIS STATE CHARTERED CREDIT UNION OPERATED FOR THE MUTUAL BENEFIT OF ITS MEMBERS. THE CREDIT UNION MAKES LOANS TO MEMBERS AND PAYS DIVIDENDS TO MEMBERS WITH SHARE SAVINGS DEPOSITS AT A COMPETATIVE RATE IF INTEREST.