Banks in Grundy County, Illinois
19 active bank branches operated by 12 institutions, per FDIC records.
Active branches
19
Banks present
12
Deposits (2026)
$1.7B
Closings since 2020
3
0 openings
Largest banks by deposits in Grundy County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Old National Bank | $407M | 23.9% | 4 |
| Grundy Bank | $363M | 21.3% | 3 |
| Busey Bank | $258M | 15.1% | 2 |
| BMO Bank | $196M | 11.5% | 2 |
| Chase Bank | $119M | 7% | 1 |
| Midland States Bank | $104M | 6.1% | 1 |
| OSB Community Bank | $59M | 3.4% | 1 |
| Heartland Bank and Trust Company | $44M | 2.6% | 1 |
| American Commercial Bank & Trust | $43M | 2.5% | 1 |
| First Secure Community Bank | $40M | 2.3% | 1 |
Deposit location reflects the office to which deposits are reported and may not represent the residence of depositors.
Cities and towns
Transcribed from FDIC BankFind Suite active-location records and the annual Summary of Deposits. County assignment follows the FDIC branch record.