Reliabank Dakota
Estelline, SD · Owner: Big Sioux Financial Inc
$788M
total assets, June 30, 2026
$788M
total assets, June 30, 2026
Reliabank Dakota is a state nonmember bank based in Estelline, SD, owned by Big Sioux Financial Inc. As of June 30, 2026 it held $788.4 million in assets and $663.6 million in deposits; assets were up 6.5% from a year before. It has 10 branches.
Updated Oct 11, 2026 · numbers as of June 30, 2026
Total assets
$788M
+6.5% in a year · +4.0% in a quarter
Deposits
$664M
+7.6% in a year · +4.0% in a quarter
Loans
$529M
+11.9% in a year · +3.5% in a quarter
Profit so far
$5.3M
Jan 1 to Jun 30, 2026 · +84.8% in a year
Capital ratio
10.49%
+0.65 pts in a year
Return on assets
1.37%
+0.62 pts in a year
Facts
- Type
- State nonmember bank
- Head office
- 211 Main St N, Estelline, SD, 57234
- County
- Hamlin
- Holding company
- Big Sioux Financial Inc
- Established
- Sep 1, 1920
- Employees
- 75
- Branches
- 10
- Website
- www.reliabank.com
- Id
- b16221
Quarter by quarter
March 31, 1984 to June 30, 2026
Assets, deposits and loans
Each quarter end, US dollars
Profit by quarter
Net income of each quarter, the last 12
Ratios
Percent. Return on assets and net interest margin are yearly rates.
Branches
10 offices as of June 30, 2026, holding $663.6 million in deposits
Branch map
Every branch, sized by its deposits
| State | Branches | Deposits | Share |
|---|---|---|---|
| South Dakota | 10 | $664M | 100.0% |
| Largest branches | Place | Deposits |
|---|---|---|
| Watertown Branch | Watertown, SD | $354M |
| Tea Branch | Tea, SD | $63.0M |
| Reliabank Dakota (main office) | Estelline, SD | $56.2M |
| Hartford Branch | Hartford, SD | $50.6M |
| Sioux Falls Branch | Sioux Falls, SD | $44.4M |
| Hayti Branch | Hayti, SD | $36.9M |
| Watertown Sw Branch | Watertown, SD | $22.6M |
| Humboldt Branch | Humboldt, SD | $18.3M |
| Reliabank Dakota - Colton, Sd Branch | Colton, SD | $10.2M |
| Hazel Branch | Hazel, SD | $7.0M |
Related pages
Questions and answers
How big is Reliabank Dakota?
$788.4 million in total assets and $663.6 million in deposits as of June 30, 2026, with assets up 6.5% from a year before. Its loans were $529.5 million.
How many branches does Reliabank Dakota have?
10 branches in South Dakota as of June 30, 2026.
Is Reliabank Dakota profitable?
Yes: it earned $5.31 million from January 1 to June 30, 2026 (up 84.8% from the same months a year before). Its return on assets was 1.37% a year; about 1% is typical.
Who owns Reliabank Dakota?
Reliabank Dakota is owned by Big Sioux Financial Inc, its holding company.
Official public data from the reports every insured bank files each quarter. Profit so far runs from January 1 to the quarter end. Branch deposits are counted once a year, as of June 30. New quarters appear about two months after the quarter ends.