The Tucson Old Pueblo Credit Union All Credit Levels is a cdfi lender from Tucson Old Pueblo Credit Union. The ongoing APR is 11.24 %. Rewards: ICCU provides advanced mobile banking, credit monitoring, and community support initiatives.. This product reports activity to your personal credit report. Tucson Old Pueblo Credit Union (ICCU) is a member-focused credit union in Tucson, AZ, offering a range of financial products and services designed to enhance the financial well-being of its members. They serve the local community with a commitment to personal service and advanced banking technology. Services include: personal loans, auto loans. US Treasury certified CDFI Credit Union in Tucson, AZ. Membership required.