We look forward to hearing from you and will assist any way we can.
Please contact us through one of the options below:


Call: 800.923.7280 Info@MarineCU.com
Marine Contact Center hours are Monday-Friday 7:00 am – 5:00 pm, Saturday 8:00 am – 1:00 pm
For a list our member’s Frequently Asked Questions, click here.
See local branch listings for locations, phone numbers and hours.
Let Us Know What You Think:
I value your thoughts and opinions and appreciate your feedback. If you received exceptional service from someone at Marine and would like to recognize them, or see some areas that could be improved, I would like to hear from you.
Shawn Hanson, President/CEO
Mailing Address:
P.O. Box 309
Onalaska, WI 54650
Lien Holder Address:
P.O. Box 309
Onalaska, WI 54650
Bank by Phone:
Call 800.444.5717
Available 24 hours a day
Personal Identification Number (PIN) is required
Lost or Stolen MCU Credit or Debit Cards:
Debit card call 800.923.7280 during business hours (800.528.2273 after hours)
Credit card call 800.558.3424
Debit Card Activation:
Debit card call 866.619.0245