SIU Credit Union is a federally chartered credit union serving Southern Illinois University and the Carbondale, Illinois community. It provides financial services including savings accounts, loans, and other banking products to its membership. The credit union is located in Carbondale and operates as a member-owned financial cooperative.

State Farm Federal Credit Union is headquartered in Bloomington, Illinois and serves employees of State Farm Insurance and their families. It is one of the largest credit unions in the United States by assets. The credit union offers a full range of financial services including savings accounts, loans, and investment products.

University of Illinois Community Credit Union is a federally chartered credit union serving the Champaign, Illinois area with a primary focus on the University of Illinois community and surrounding region. The credit union provides financial services including savings accounts, loans, and other banking products to eligible members.

Harvard Community Credit Union is a federally chartered credit union serving the Harvard, Illinois area. The institution provides financial services to members in and around McHenry County. It operates as a community-based financial cooperative.

I. H. Mississippi Valley Credit Union is a federally chartered credit union located in Moline, Illinois, serving members in the Illinois-Iowa region. The institution operates as a community-based financial cooperative providing deposit and lending services to its membership.

National Police Federal Credit Union is a credit union serving law enforcement and public safety personnel, based in Chicago, Illinois. The institution serves police officers and related public safety professionals across multiple states.

Numark Credit Union is a federally chartered credit union based in Joliet, Illinois. It serves members in the Chicago metropolitan area and surrounding regions. The institution provides standard credit union services including savings accounts, loans, and financial products to its membership base.

Vibrant Credit Union is a federally chartered credit union based in Moline, Illinois, serving members in the Quad Cities region and surrounding areas. The institution provides standard credit union services including savings accounts, loans, and financial products to its membership base.

Corporate America Family Credit Union is a federally chartered credit union located in Elgin, Illinois. It serves members in the Chicago metropolitan area and surrounding regions. The credit union provides standard financial services including savings accounts, loans, and other member-focused products.

Citizens Equity First Credit Union is a federally chartered credit union based in Peoria, Illinois. It serves members in the central Illinois region with a focus on providing financial services to its membership base. The institution operates as a member-owned cooperative financial institution.