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Woodbury County, IA Bank Deposit Market Share

The Security National Bank of Sioux City, Iowa holds the largest share of deposits in Woodbury County, IA, 28.3%, followed by Central Bank (12.6%) and Wells Fargo Bank, N.A. (12.3%). 20 institutions hold $3.45B at 44 offices as of June 30, 2026, up 2.4% from 2025.

Institutions: 20 Offices: 44 Deposits: $3.45B Survey: FDIC Summary of Deposits, June 30, 2026

Largest share changes since 2025

Gained: Wells Fargo Bank, N.A. (0.59 points); Northwest Bank (0.35 points); Peoples Bank (0.31 points).

Lost: The Security National Bank of Sioux City, Iowa (-0.48 points); First Interstate Bank (-0.43 points); Pioneer Bank (-0.42 points).

# Institution Offices Deposits Market share Share change from 2025 Deposit change
1 The Security National Bank of Sioux City, Iowa 6 $975.1M 28.27% -0.48 pts 0.7%
2 Central Bank 5 $436.0M 12.64% -0.02 pts 2.3%
3 Wells Fargo Bank, N.A. 3 $425.4M 12.33% +0.59 pts 7.6%
4 U.S. Bank N.A. 3 $277.2M 8.04% -0.35 pts -1.8%
5 Great Southern Bank 5 $273.7M 7.93% -0.41 pts -2.6%
6 Primebank 2 $230.1M 6.67% +0.16 pts 5.0%
7 Pioneer Bank 3 $191.4M 5.55% -0.42 pts -4.8%
8 Northwest Bank 1 $127.8M 3.70% +0.35 pts 13.2%
9 United Bank of Iowa 4 $97.0M 2.81% +0.13 pts 7.4%
10 Availa Bank 1 $85.7M 2.48% +0.21 pts 11.7%
11 Peoples Bank 1 $81.2M 2.35% +0.31 pts 17.8%
12 Sloan State Bank 1 $59.7M 1.73% +0.14 pts 11.1%
13 Liberty National Bank 1 $51.8M 1.50% +0.25 pts 22.9%
14 BankFirst 2 $42.7M 1.24% -0.12 pts -6.9%
15 Midstates Bank, N.A. 1 $27.7M 0.80% +0.06 pts 11.3%
16 FNB Bank 1 $25.3M 0.73% +0.02 pts 5.6%
17 Shelby County State Bank 1 $19.2M 0.56% +0.01 pts 5.2%
18 First Security Bank 1 $16.9M 0.49% +0.01 pts 3.6%
19 First Interstate Bank 1 $3.7M 0.11% -0.43 pts -79.8%
20 F&M Bank 1 $1.6M 0.05% -0.01 pts -9.5%

About this list

Deposits are those held at each institution's offices in Woodbury County 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.

Wider markets

Iowa deposits by institution Sioux City, IA-NE-SD metro area Iowa bank directory

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