Every FDIC-insured bank branch in Otter Tail County, Minnesota as of June 30, 2025. County land area: 1,972 square miles, 1.4 branches per 100 sq mi.
| Institution | Branches | Deposits |
|---|---|---|
| Farmers State Bank of Underwood | 3 | $84.0M |
| The First National Bank of Henning | 3 | $299.3M |
| Wadena State Bank | 2 | $18.2M |
| Bell Bank | 2 | $383.3M |
| Old National Bank | 2 | $192.9M |
| United Community Bank | 2 | $273.9M |
| Midwest Bank | 2 | $99.7M |
| FM Bank | 1 | $192.6M |
| BMO Bank National Association | 1 | $41.9M |
| American National Bank of Minnesota | 1 | $14.0M |
| Gate City Bank | 1 | $35.9M |
| American Federal Bank | 1 | $50.6M |
| Wells Fargo Bank, National Association | 1 | $116.3M |
| Minnesota National Bank | 1 | $24.9M |
| U.S. Bank National Association | 1 | $39.3M |
| Farmers & Merchants State Bank of New York Mills, Incorporated | 1 | $72.3M |
| Northwestern Bank, National Association | 1 | $1.3M |
| Vergas State Bank | 1 | $47.3M |