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Douglas County, WI Bank Deposit Market Share

National Bank of Commerce holds the largest share of deposits in Douglas County, WI, 76.7%, followed by BMO Bank N.A. (9.0%) and Superior Savings Bank (7.6%). 6 institutions hold $1.07B at 10 offices as of June 30, 2026, up 6.0% from 2025.

Institutions: 6 Offices: 10 Deposits: $1.07B Survey: FDIC Summary of Deposits, June 30, 2026

Largest share changes since 2025

Gained: Superior Savings Bank (0.86 points); National Bank of Commerce (0.54 points); Frandsen Bank & Trust (0.36 points).

Lost: BMO Bank N.A. (-1.48 points); Chippewa Valley Bank (-0.15 points); Security State Bank (-0.14 points).

# Institution Offices Deposits Market share Share change from 2025 Deposit change
1 National Bank of Commerce 4 $817.5M 76.71% +0.54 pts 6.7%
2 BMO Bank N.A. 1 $96.3M 9.04% -1.48 pts -8.9%
3 Superior Savings Bank 1 $81.4M 7.64% +0.86 pts 19.5%
4 Chippewa Valley Bank 2 $48.4M 4.54% -0.15 pts 2.7%
5 Frandsen Bank & Trust 1 $11.1M 1.04% +0.36 pts 62.6%
6 Security State Bank 1 $11.0M 1.03% -0.14 pts -6.4%

About this list

Deposits are those held at each institution's offices in Douglas 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

Wisconsin deposits by institution Duluth, MN-WI metro area Wisconsin bank directory

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