Banks in Mercer County, Illinois
10 active bank branches operated by 6 institutions, per FDIC records.
Active branches
10
Banks present
6
Deposits (2026)
$414M
Closings since 2020
1
1 openings
Largest banks by deposits in Mercer County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Farmers State Bank of Western Illinois | $86M | 20.8% | 4 |
| Blackhawk Bank & Trust | $80M | 19.4% | 1 |
| BankOrion | $75M | 18.1% | 1 |
| Midwest Bank | $67M | 16.2% | 1 |
| 1st Community Bank | $58M | 14.1% | 2 |
| CBI Bank & Trust | $47M | 11.5% | 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.