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Contact Marine

How may we help you today? Use this form or one of the numbers below to inquire about any Marine Credit Union service.

We look forward to hearing from you and will assist any way we can.

Call 800.923.7280
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 (800.682.6075 after hours)
Credit card call 800.558.3424

Debit and credit card activation
Debit card call 800.411.6390
Credit card call 800.553.7650


: Branch Offices Closed on Memorial Day /Learn more