Contact Us
We look forward to hearing from you.
Please contact us through one of the options below:
Call Us
Give us a call at 800.923.7280. Marine Contact Center hours are Monday-Friday 7:00am – 5:00pm and Saturday 8:00am – 1:00pm.
Schedule an Appointment
Book a time to speak with a Marine Credit Union team member at a branch or via phone.
Email Us
Send us a message at Info@MarineCU.com. Please do not include confidential information in emails. For assistance with your account, please login and use the Message Center found within Online Banking.
Find Us Nearby
See a list of our local branches for locations, phone numbers, and hours.
Report a Lost or Stolen Card
For debit cards, call 800.923.7280 during business hours and 833.933.1681 after hours. For credit cards, call 800.558.3424.
Other ways to contact us
Mailing Address:
P.O. Box 309
Onalaska, WI 54650
Overnight Address:
300 2nd St. N, Ste 400
La Crosse, WI 54601
Secured Party Lienholder Address:
P.O. Box 309
Onalaska, WI 54650
Insurance Lienholder Address:
P.O. Box 3390
Carmel, IN 46082
www.myinsuranceinfo.com
Call 800.444.5717 to access your account by phone. It is available 24 hours a day. Your Personal Identification Number (PIN) is required to access phone banking.
Call 833.681.3437 to activate your debit card or change your PIN.
Visit our Help center for a list of Frequently Asked Questions.
Reach out to us.
Please do not include confidential information in submissions.

Share your experience
We value your feedback! Share your experience–whether you want to recognize exceptional service or suggest areas for improvement. Your voice helps us grow!
Book your appointment today
Need help with something specific? We’re here to assist. Pick a time to connect and schedule your appointment today.