Banks in Warren County, Illinois
6 active bank branches operated by 6 institutions, per FDIC records.
Active branches
6
Banks present
6
Deposits (2025)
$610M
Closings since 2020
3
1 openings
Largest banks by deposits in Warren County (2025)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Midwest Bank | $302M | 49.6% | 1 |
| Security Savings Bank | $196M | 32.1% | 1 |
| Community National Bank in Monmouth | $48M | 7.8% | 1 |
| Fortress Bank | $37M | 6% | 1 |
| Morton Community Bank | $22M | 3.5% | 1 |
| CBI Bank & Trust | $6M | 1% | 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.