Banks in Dekalb County, Illinois
37 active bank branches operated by 9 institutions, per FDIC records.
Active branches
37
Banks present
9
Deposits (2025)
$2.8B
Closings since 2020
4
1 openings
Largest banks by deposits in Dekalb County (2025)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| First National Bank of Omaha | $816M | 29.2% | 9 |
| Resource Bank | $703M | 25.2% | 10 |
| Old National Bank | $428M | 15.3% | 5 |
| Heartland Bank and Trust Company | $403M | 14.4% | 6 |
| First State Bank | $173M | 6.2% | 3 |
| Waterman Bank | $98M | 3.5% | 1 |
| Fifth Third Bank | $70M | 2.5% | 1 |
| PNC Bank | $63M | 2.3% | 1 |
| Old Second National Bank | $39M | 1.4% | 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.