Columbia County, Wisconsin, a county in the Madison-Janesville-Beloit, WI market, holds $2.0B in deposits across 8 insured institutions and 19 branches. Bank of Wisconsin Dells is the largest deposit holder at 32.6% share. The top three institutions hold 75.5% of deposits, which places the county in the concentrated band. Deposits have grown 26.1% since 2020 while the branch count fell by 4. It produces $3.2B of output, ranking #745 of the 1,523 counties within a CSA or MSA by economic output.
Deposit trend
Branches: 23 in 2020 to 19 in 2025. Institutions: 10 to 8. Top-three share: 70.9% to 75.5%.
Leading institutions by deposits
| Institution | Deposits | Share | 5‑yr |
|---|---|---|---|
| Bank of Wisconsin Dells | $637M | 32.6% | +30% |
| Farmers and Merchants Union Bank | $501M | 25.7% | +43% |
| Associated Bank, National Association | $336M | 17.2% | +31% |
| Bank First, N.A. | $138M | 7.1% | no 2020 presence |
| U.S. Bank National Association | $102M | 5.2% | +21% |
| National Exchange Bank and Trust | $94M | 4.8% | +22% |
| BMO Bank National Association | $89M | 4.6% | -17% |
| Baraboo State Bank | $56M | 2.9% | +29% |
The 8 insured institutions with a branch presence in this county, as of June 30, 2025. Five-year change compares the same institution’s county deposits in 2020 and 2025. Institutions are tracked by FDIC certificate number, and where an institution acquired another bank, the acquired bank’s prior deposits are folded into the baseline so the change reflects the combined, continuing franchise rather than reading as new. Even so, a large gain can reflect acquisition rather than competitive growth; “no 2020 presence” means neither the institution nor a bank it later absorbed reported deposits in this county that year.
Part of the Madison-Janesville-Beloit market
Columbia County is one of 6 counties that make up the Madison-Janesville-Beloit, WI market, a Combined Statistical Area (ranked #56 of 293 U.S. markets by economic output). It produces 4.5% of the market’s output and holds 5.6% of its deposits.
| Measure | Columbia County | Share of Madison-Janesville-Beloit market |
|---|---|---|
| 2024 GDP | $3.2B | 4.5% |
| Deposits | $2.0B | 5.6% |
| Population | 58,132 | 6.2% |
View the full Madison-Janesville-Beloit market profile →
Recruiting in Columbia County
Deposits are held closely by the largest banks, which often means the bankers worth recruiting are inside a small number of institutions. Who holds the deposits, and how contested the market is, shapes both the runway for growth and the competition you would be recruiting against. We recruit commercial relationship managers, banking teams, and market leaders for banks building in markets like Columbia County, on a retained basis.
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