Teachers Credit Union (TCU) has grown to become Indiana’s largest Credit Union with more than $3 billion in assets, 55 branches throughout the state of Indiana and Southwest Michigan, and more than 290,000 members.A financial cooperative owned by its members, TCU offers traditional financial services, including checking, savings, mortgages and credit cards, as well as non-traditional services such as investment, insurance and travel services. And while financial service is an important part of contributing to a community, TCU’s 85-year history shows a commitment to going beyond this service and working to build a better community. Membership: The credit union is a member-owned financial cooperative providing banking services including savings, loans, and other financial services to members. Membership is also open to immediate family of current members.