FDIC-insured bank
Reliabank Dakota — Estelline, SD
Bank headquartered in Estelline, South Dakota, part of BIG SIOUX FINANCIAL INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 211 Main St N Estelline, SD 57234 |
| County | Hamlin |
| Metro area | Watertown, SD |
| Website | www.reliabank.com |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 16221 |
| Federal Reserve RSSD ID | 108951 |
| Status | Active |
| Charter class | NM (STATE) |
| Holding company | BIG SIOUX FINANCIAL INC |
| Domestic offices | 10 |
| Financials as of | June 30, 2026 |
How to find your Reliabank Dakota routing number
FDIC does not publish ABA routing numbers, and many banks use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this bank, the "account details" screen in its online banking, or its official website at www.reliabank.com.
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Offices nearest to headquarters
| Reliabank Dakota main office Estelline, SD |
211 Main St N, 57234 |
| Hayti Branch Hayti, SD |
117 Main Avenue, 57241 |
| Watertown Sw Branch Watertown, SD |
830 10th St Sw, 57201 |
| Watertown Branch Watertown, SD |
1401 4th St Ne, 57201 |
| Hazel Branch Hazel, SD |
11 W William St, 57242 |
| Reliabank Dakota - Colton, Sd Branch Colton, SD |
200 E. 4th St., 57018 |
| Hartford Branch Hartford, SD |
304 W Sd Highway 38, 57033 |
| Humboldt Branch Humboldt, SD |
1003 W 2nd Ave, 57035 |
| Sioux Falls Branch Sioux Falls, SD |
608 W 86th St, 57108 |
| Tea Branch Tea, SD |
720 E Kevin Dr, 57064 |
Where Reliabank Dakota has offices
Cities with the most Reliabank Dakota offices
Largest banks headquartered elsewhere in South Dakota
| Citibank, National Association Sioux Falls | $1.98 trillion |
| Wells Fargo Bank, National Association Sioux Falls | $1.91 trillion |
| The Bancorp Bank, National Association Sioux Falls | $9.21 billion |
| Pathward, National Association Sioux Falls | $7.31 billion |
| Dacotah Bank Aberdeen | $4.92 billion |
| First Bank & Trust Brookings | $4.78 billion |
| First PREMIER Bank Sioux Falls | $3.64 billion |
| First Dakota National Bank Yankton | $3.39 billion |
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