Banks in Dekalb County, Illinois
37 active bank branches operated by 9 institutions, per FDIC records.
Active branches
37
Banks present
9
Deposits (2026)
$3.0B
Closings since 2020
4
1 openings
Largest banks by deposits in Dekalb County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| First National Bank of Omaha | $848M | 28.5% | 9 |
| Resource Bank | $729M | 24.5% | 10 |
| Old National Bank | $526M | 17.7% | 5 |
| Heartland Bank and Trust Company | $398M | 13.4% | 6 |
| First State Bank | $202M | 6.8% | 3 |
| Waterman Bank | $97M | 3.3% | 1 |
| Fifth Third Bank | $71M | 2.4% | 1 |
| PNC Bank | $65M | 2.2% | 1 |
| Old Second National Bank | $40M | 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.