Vantage Credit Union is a federally chartered credit union located in Saint Charles, Missouri. It serves members in the St. Louis metropolitan area and surrounding regions. The institution provides standard credit union services including savings accounts, loans, and financial products to its membership base.

Members 1st Credit Union is a federally chartered credit union based in Saint Louis, Missouri. The institution serves members in the Saint Louis metropolitan area and surrounding regions. It operates as a community-based financial cooperative providing traditional banking services to its membership.

Neighbors Credit Union is a federally chartered credit union serving the Saint Louis, Missouri area. The institution provides financial services to members within its defined field of membership. Limited public information is available regarding specific assets or membership size.

Alltru Credit Union is a member-owned, not-for-profit financial cooperative headquartered in Wentzville, Missouri, serving the St. Louis metropolitan area since 1968 (originally as McDonnell Douglas Credit Union, later 1st Financial Federal Credit Union until rebranding in 2020). The credit union operates multiple branches across St. Louis City, St. Louis County, and St. Charles County, with over 39,600 members and approximately $343.8 million in assets. Alltru is a federally insured institution and designated Community Development Financial Institution (CDFI).

Mazuma Credit Union is a federally chartered credit union headquartered in Overland Park, Kansas, serving members across multiple states. It is one of the larger credit unions in the Kansas City metropolitan area with a focus on consumer and small business lending. The institution operates both physical branches and digital banking services.

Together Credit Union is a federally chartered credit union based in Saint Louis, Missouri. The institution serves members in the Saint Louis metropolitan area and surrounding regions. Together Credit Union offers standard credit union services including savings accounts, loans, and financial products to its membership base.

R-G Federal Credit Union is a federal credit union headquartered in Raymore, Missouri, established in 1957 to serve military and civilian personnel at Richards-Gebaur Air Force Base. It now serves approximately 7,800 members across 12 Missouri counties (Jackson, Cass, Johnson, Bates, Vernon, Henry, St. Clair, Cedar, Hickory, Morgan, Benton, and parts of Pettis) with assets exceeding $119 million. The credit union operates multiple branches and offers loans, checking accounts, and online banking services.

St. Louis Community Credit Union is a federally chartered credit union serving the Saint Louis, Missouri area. It provides financial services including savings accounts, loans, and other products to its membership. The institution operates as a member-owned cooperative financial institution regulated by the National Credit Union Administration.