Lists · Deposits by metro area
Sioux City, IA-NE-SD Metro Area Bank Deposit Market Share
The Security National Bank of Sioux City, Iowa holds the largest share of deposits in the Sioux City, IA-NE-SD metro area, 20.4%, followed by Central Bank (10.3%) and Wells Fargo Bank, N.A. (8.9%). 30 institutions hold $4.77B at 68 offices as of June 30, 2026, up 2.8% from 2025.
Largest share changes since 2025
Gained: Wells Fargo Bank, N.A. (0.40 points); Peoples Bank (0.34 points); Northwest Bank (0.25 points).
Lost: Pioneer Bank (-0.63 points); The Security National Bank of Sioux City, Iowa (-0.41 points); Great Southern Bank (-0.32 points).
| # | Institution | Deposits | Market share | Share change from 2025 |
|---|---|---|---|---|
| 1 | The Security National Bank of Sioux City, Iowa | $975.1M | 20.43% | -0.41 pts |
| 2 | Central Bank | $492.0M | 10.31% | -0.19 pts |
| 3 | Wells Fargo Bank, N.A. | $425.4M | 8.91% | +0.40 pts |
| 4 | Great Southern Bank | $296.6M | 6.21% | -0.32 pts |
| 5 | Liberty National Bank | $294.1M | 6.16% | +0.10 pts |
| 6 | U.S. Bank N.A. | $277.2M | 5.81% | -0.27 pts |
| 7 | Pioneer Bank | $243.0M | 5.09% | -0.63 pts |
| 8 | Primebank | $230.1M | 4.82% | +0.10 pts |
| 9 | BankFirst | $165.1M | 3.46% | -0.03 pts |
| 10 | Premier Bank | $152.8M | 3.20% | +0.01 pts |
| 11 | Northwest Bank | $127.8M | 2.68% | +0.25 pts |
| 12 | Bank of Dixon County | $121.6M | 2.55% | +0.17 pts |
| 13 | F&M Bank | $110.1M | 2.31% | +0.02 pts |
| 14 | First Savings Bank | $107.4M | 2.25% | +0.21 pts |
| 15 | Peoples Bank | $100.0M | 2.10% | +0.34 pts |
| 16 | United Bank of Iowa | $97.0M | 2.03% | +0.09 pts |
| 17 | Security National Bank of South Dakota | $89.3M | 1.87% | +0.05 pts |
| 18 | Availa Bank | $85.7M | 1.79% | +0.14 pts |
| 19 | Siouxland Bank | $76.4M | 1.60% | +0.02 pts |
| 20 | Sloan State Bank | $59.7M | 1.25% | +0.09 pts |
| 21 | Security Bank | $43.7M | 0.91% | -0.03 pts |
| 22 | First Dakota National Bank | $43.4M | 0.91% | 0.00 pts |
| 23 | First Community Bank | $28.6M | 0.60% | -0.01 pts |
| 24 | Midstates Bank, N.A. | $27.7M | 0.58% | +0.04 pts |
| 25 | First Nebraska Bank | $27.2M | 0.57% | +0.08 pts |
| 26 | FNB Bank | $25.3M | 0.53% | +0.01 pts |
| 27 | Shelby County State Bank | $19.2M | 0.40% | +0.01 pts |
| 28 | First Security Bank | $16.9M | 0.35% | +0.00 pts |
| 29 | 1st Financial Bank USA | $11.4M | 0.24% | +0.04 pts |
| 30 | First Interstate Bank | $3.7M | 0.08% | -0.31 pts |
About this list
Deposits are those held at each institution's offices in Sioux City, IA-NE-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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