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Attention Wintrust Customers

Security Reminder: We will never ask you for sensitive information, including Social Security number, account numbers and online banking ID/password in an unsolicited communication (such as an email, phone call or text message). We also will not ask you on our websites to verify sensitive personal or account information.

If you receive an unsolicited communication from Wintrust that asks you for sensitive personal information, or links you to a website that asks for sensitive personal information, please email us at or contact your banker.

At Wintrust, keeping your sensitive information safe and secure is our top priority. You can learn more about the security measures we have in place, and how to keep your information safe, at

Let's Talk

Ask us a question, give us some feedback, find a location, or just give us a ring. Whichever way you choose, we promise we'll answer.

Important Phone Numbers

Northbrook Bank & Trust Customer Service | 847-418-2800

Online Banking Customer Service | 877-243-7361

VISA Gift Card Customer Service | 855-887-1836

ATM/Debit Card Services | 800-236-2442

Telebank | 866-721-2463

Treasury Management Support | 847-939-9050
M - F: 7:30 a.m. - 6 p.m. Central time

What's My Routing Number?




Borrowers have certain rights under Federal law related to resolving errors and requesting information about their mortgage account. If you would like to request information about your mortgage loan or suspect an error occurred in servicing your mortgage loan account, you must contact us at:

Residential Loan Servicing
PO Box 714
Rosemont, IL 60018

Your request must be in writing and include the name of each borrower, the loan number and a description of the error you believe occurred OR a request for specific information regarding your mortgage loan.