Every FDIC-insured bank branch in Polk County, Minnesota as of June 30, 2025. County land area: 1,971 square miles, 0.7 branches per 100 sq mi.
| Institution | Branches | Deposits |
|---|---|---|
| American Federal Bank | 3 | $188.9M |
| Ultima Bank Minnesota | 3 | $184.2M |
| Frandsen Bank & Trust | 1 | $146.8M |
| United Valley Bank | 1 | $101.1M |
| Red River State Bank | 1 | $38.7M |
| American State Bank of Grygla | 1 | $40.6M |
| Old National Bank | 1 | $206.6M |
| The First National Bank of Bagley | 1 | $25.8M |
| The First National Bank of McIntosh | 1 | $31.3M |
| Unity Bank | 1 | $24.6M |