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Marathon County, WI Bank Deposit Market Share

BMO Bank N.A. holds the largest share of deposits in Marathon County, WI, 28.8%, followed by Peoples State Bank (14.8%) and Incrediblebank (12.1%). 17 institutions hold $5.35B at 44 offices as of June 30, 2026, up 2.6% from 2025.

Institutions: 17 Offices: 44 Deposits: $5.35B Survey: FDIC Summary of Deposits, June 30, 2026

Largest share changes since 2025

Gained: One Community Bank (3.96 points, new to this market); Bank of Sun Prairie (0.96 points, new to this market); Nicolet National Bank (0.34 points).

Lost: Incrediblebank (-1.44 points); Peoples State Bank (-0.37 points); Prevail Bank (-0.06 points).

# Institution Offices Deposits Market share Share change from 2025 Deposit change
1 BMO Bank N.A. 4 $1.54B 28.81% -0.02 pts 2.5%
2 Peoples State Bank 5 $792.4M 14.80% -0.37 pts 0.1%
3 Incrediblebank 5 $646.0M 12.07% -1.44 pts -8.4%
4 Associated Bank, N.A. 2 $604.4M 11.29% +0.24 pts 4.8%
5 Abbybank 4 $368.8M 6.89% +0.10 pts 4.0%
6 Nicolet National Bank 3 $359.1M 6.71% +0.34 pts 8.1%
7 U.S. Bank N.A. 3 $213.0M 3.98% +0.05 pts 4.0%
8 One Community Bank 3 $211.9M 3.96% +3.96 pts New
9 Partners Bank 2 $166.7M 3.11% +0.23 pts 10.9%
10 Marathon Bank 3 $162.8M 3.04% +0.05 pts 4.4%
11 Forward Bank 2 $90.2M 1.68% +0.13 pts 11.0%
12 Bank of Sun Prairie 1 $51.6M 0.96% +0.96 pts New
13 Citizens State Bank of Loyal 2 $44.3M 0.83% +0.02 pts 4.6%
14 Prevail Bank 1 $39.0M 0.73% -0.06 pts -5.1%
15 Woodtrust Bank 2 $35.5M 0.66% +0.13 pts 28.6%
16 Compass Bank 1 $14.3M 0.27% +0.03 pts 15.2%
17 Community First Bank 1 $11.3M 0.21% -0.01 pts -3.0%

About this list

Deposits are those held at each institution's offices in Marathon 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 Wausau-Weston, WI metro area Wisconsin bank directory

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