Branch Network
Reliabank Dakota Locations & Branches Estelline, South Dakota
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Reliabank Dakota operates 10 branches from its headquarters in Estelline, SD, .
Reliabank Dakota branch network
All 10 branches are in SOUTH DAKOTA, across 9 cities. Watertown, SD has the most of its branches, 2. Its largest office by deposits is the Watertown Branch office in Watertown, SD, with $354.4M (53.4% of its branch deposits). It had the same number of branches on June 30, 2025.
Reliabank Dakota at a glance
Its CET1 capital ratio was 14.06% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $788.4M
- CET1 ratio, Q2 2026
- 14.06%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Established
- 1920
Full financial profile · Is Reliabank Dakota safe? · Routing number
Deposit market share
Share of all FDIC-insured deposits held in each area, from the June 30, 2026 Summary of Deposits. Rank 1 is the largest holder. Shares are by bank charter, not by holding company.
| Area | Rank | Deposit share | Deposits |
|---|---|---|---|
| City: Estelline, SD (1 branch) | 1 of 1 | 100.0% | $56.2M |
| State: SD (10 branches) | 20 of 82 | <0.1% | $663.6M |
Ranked by total assets among banks headquartered in the state: Largest banks in South Dakota.
Share by county and metro area
Reliabank Dakota's share of FDIC-insured deposits in the counties and metro areas where it has branches, from the June 30, 2026 Summary of Deposits. Up to the ten largest of each are shown, by the bank's deposits. Rank 1 is the largest holder. Banks only: credit unions are not in the Summary of Deposits.
Counties
| County | Rank | Deposit share | Deposits | County total |
|---|---|---|---|---|
| Codington, SD (2 branches) | 1 of 10 | 23.8% | $377.0M | $1.59B |
| Lincoln, SD (2 branches) | 11 of 26 | <0.1% | $107.4M | $647.52B |
| Hamlin, SD (3 branches) | 1 of 4 | 44.4% | $100.1M | $225.3M |
| Minnehaha, SD (3 branches) | 16 of 25 | <0.1% | $79.1M | $478.92B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Watertown, SD (5 branches) | 1 of 12 | 26.3% | $477.1M | $1.81B |
| Sioux Falls, SD (5 branches) | 18 of 39 | <0.1% | $186.5M | $1.13T |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Watertown Branch | Watertown, SD | 57201 | $354.4M |
| Tea Branch | Tea, SD | 57064 | $63.0M |
| Reliabank Dakota (main office) | Estelline, SD | 57234 | $56.2M |
| Hartford Branch | Hartford, SD | 57033 | $50.6M |
| Sioux Falls Branch | Sioux Falls, SD | 57108 | $44.4M |
| Hayti Branch | Hayti, SD | 57241 | $36.9M |
| Watertown SW Branch | Watertown, SD | 57201 | $22.6M |
| Humboldt Branch | Humboldt, SD | 57035 | $18.3M |
| Reliabank Dakota - Colton, Sd Branch | Colton, SD | 57018 | $10.2M |
| Hazel Branch | Hazel, SD | 57242 | $7.0M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 16221) · FFIEC NIC profile (RSSD 108951)