Contact Us
Routing Number: 281082339
Email Us
memberserv@gmcu.org
Please do not send any sensitive or confidential information over email such as Social Security numbers or account numbers.
Mailing Address
Please mail all payments, deposits, and correspondence to:
P.O. Box 1020, St. Louis, MO 63188-1020
CALL US
Customer Phone Services
Availability: 8a.m.-5p.m. M-Tu-Th-F | 10a.m.-5p.m. W | 9a.m.-noon Sat
Phone: (314) 621-4575
Toll-free Phone: (800) 621-4828
Additional Contact
Fax: (314) 621-1045
Online Banking & Customer Service
(888) 763-7471 Freedom 24 audio response line
(833) 414-0541 Online Banking customer service | 6am – 12am
(833) 604-0708 Bill Pay support | 6am – 12am
Card Services
(800) 472-3272 Report lost/stolen debit card
(800) 554-8969 Debit card customer service outside the U.S.
(800) 558-3424 Credit card customer service
Downtown St. Louis
St. Louis, MO 63101
St. Peters
St. Peters, MO 63376
Twin Oaks
Twin Oaks, MO 63088
Shiloh
Shiloh, IL 62221
North County
Florissant, MO 63031
South County
St. Louis, MO 63123
Shiloh, IL 62221
St. Louis, MO 63101
St. Peters, MO 63376
Florissant, MO 63031
Twin Oaks, MO 63088
St. Louis, MO 63123
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Privacy Policy
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*Please call (314) 621-4575 or 800-621-4828 to confirm that a notary is available.
**Safe Deposit Box access may be restricted to 30 minutes after branch opening & 30 minutes before branch closing.