Banks in Grundy County, Illinois
20 active bank branches operated by 13 institutions, per FDIC records.
Active branches
20
Banks present
13
Deposits (2025)
$1.7B
Closings since 2020
2
0 openings
Largest banks by deposits in Grundy County (2025)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Old National Bank | $354M | 20.6% | 4 |
| Grundy Bank | $334M | 19.5% | 3 |
| Busey Bank | $205M | 12% | 2 |
| BMO Bank | $192M | 11.2% | 2 |
| CIBC Bank USA | $180M | 10.5% | 1 |
| Chase Bank | $129M | 7.5% | 1 |
| Midland States Bank | $104M | 6.1% | 1 |
| OSB Community Bank | $59M | 3.4% | 1 |
| First Secure Community Bank | $37M | 2.1% | 1 |
| Heartland Bank and Trust Company | $35M | 2% | 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.