Lists · Deposits by metro area
Watertown, SD Metro Area Bank Deposit Market Share
Reliabank Dakota holds the largest share of deposits in the Watertown, SD metro area, 26.3%, followed by Dacotah Bank (13.6%) and First Premier Bank (13.1%). 12 institutions hold $1.81B at 21 offices as of June 30, 2026, up 3.7% from 2025.
Largest share changes since 2025
Gained: American Bank & Trust (1.32 points); First Premier Bank (0.63 points); Reliabank Dakota (0.29 points).
Lost: First Interstate Bank (-1.89 points); Dacotah Bank (-0.71 points); Plains Commerce Bank (-0.06 points).
| # | Institution | Deposits | Market share | Share change from 2025 |
|---|---|---|---|---|
| 1 | Reliabank Dakota | $477.1M | 26.32% | +0.29 pts |
| 2 | Dacotah Bank | $245.8M | 13.56% | -0.71 pts |
| 3 | First Premier Bank | $236.6M | 13.05% | +0.63 pts |
| 4 | First Interstate Bank | $179.6M | 9.91% | -1.89 pts |
| 5 | Plains Commerce Bank | $168.8M | 9.31% | -0.06 pts |
| 6 | American Bank & Trust | $159.4M | 8.79% | +1.32 pts |
| 7 | Wells Fargo Bank, N.A. | $158.1M | 8.72% | +0.01 pts |
| 8 | First Bank & Trust | $96.5M | 5.32% | +0.10 pts |
| 9 | Bryant State Bank | $45.7M | 2.52% | +0.03 pts |
| 10 | Citizens State Bank of Arlington | $25.6M | 1.41% | +0.06 pts |
| 11 | Minnwest Bank | $17.9M | 0.98% | +0.11 pts |
| 12 | Cornerstone Bank | $1.5M | 0.08% | +0.08 pts |
About this list
Deposits are those held at each institution's offices in Watertown, SD (the Census Bureau core based statistical area) as of June 30, 2026, from the FDIC Summary of Deposits, whatever state the institution is headquartered in. Market share is the institution's deposits divided by all deposits in the market. Shares are by bank charter, not rolled up to the holding company, and cover FDIC-insured institutions only, so credit unions are not included. Each office is placed in its county and metro area by the FDIC branch directory; the few offices the directory does not list are left out of the market and of every share.
Share change compares the institution's share in 2025 and 2026 in percentage points. Deposit change compares its deposits here in the two years and includes deposits that moved through mergers and branch sales; "New" means it had no offices here a year earlier. Offices that closed during the year are placed by their ZIP code or city.
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Statewide deposits
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