FDIC-insured bank
Crystal Lake Bank and Trust Company, National Association — Crystal Lake, IL
Bank headquartered in Crystal Lake, Illinois, part of WINTRUST FINANCIAL CORP.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 70 N Williams St Crystal Lake, IL 60014 |
| County | Mchenry |
| Metro area | Chicago-Naperville-Elgin, IL-IN-WI |
| Website | crystallakebank.com |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 34681 |
| Federal Reserve RSSD ID | 2624400 |
| Status | Active |
| Charter class | N (OCC) |
| Holding company | WINTRUST FINANCIAL CORP |
| Domestic offices | 6 |
| Financials as of | June 30, 2026 |
How to find your Crystal Lake Bank and Trust Company, National Association routing number
FDIC does not publish ABA routing numbers, and many banks use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this bank, the "account details" screen in its online banking, or its official website at crystallakebank.com.
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Offices nearest to headquarters
| Crystal Lake Bank And Trust Company, National Association main office Crystal Lake, IL |
70 N Williams St, 60014 |
| Crystal Lake Branch Crystal Lake, IL |
27 North Main Street, 60014 |
| Crystal Lake Branch Crystal Lake, IL |
5100 Northwest Hwy, 60014 |
| Algonquin Bank Branch Algonquin, IL |
4049 W Algonquin Rd, 60102 |
| Cary Branch Cary, IL |
60 E Main St, 60013 |
| Mchenry Bank And Trust Branch Mchenry, IL |
2205 N Richmond Rd, 60051 |
Where Crystal Lake Bank and Trust Company, National Association has offices
Cities with the most Crystal Lake Bank and Trust Company, National Association offices
Other banks headquartered in Crystal Lake
| Home State Bank, National Association | $775.95 million |
Largest banks headquartered elsewhere in Illinois
| BMO Bank National Association Chicago | $254.97 billion |
| The Northern Trust Company Chicago | $178.57 billion |
| CIBC Bank USA Chicago | $66.50 billion |
| Busey Bank Champaign | $18.15 billion |
| Byline Bank Chicago | $9.91 billion |
| Wintrust Bank, National Association Chicago | $9.57 billion |
| Lake Forest Bank & Trust Company, National Association Lake Forest | $9.25 billion |
| First Mid Bank & Trust, National Association Mattoon | $9.14 billion |
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