Brown County, Minnesota, a core county of the Mankato-New Ulm, MN market, holds $940M in deposits across 10 insured institutions and 11 branches. Citizens Bank Minnesota is the largest deposit holder at 29.5% share. The top three institutions hold 58.1% of deposits, which places the county in the moderately concentrated band. Deposits have grown 9.4% since 2020 while the branch count fell by 2. It produces $1.5B of output, ranking #1,034 of the 1,523 counties within a CSA or MSA by economic output.
Ranks show where the county stands among the 1,523 ranked counties (those within a Combined or Metropolitan Statistical Area that have a branch). They describe relative position, not a rating of market quality or suitability.
Deposit trend
Branches: 13 in 2020 to 11 in 2025. Institutions: 11 to 10. Top-three share: 57.8% to 58.1%.
Leading institutions by deposits
| Institution | Deposits | Share | 5‑yr |
|---|---|---|---|
| Citizens Bank Minnesota | $278M | 29.5% | -2% |
| Alliance Bank | $166M | 17.7% | +28% |
| Frandsen Bank & Trust | $102M | 10.8% | +22% |
| Bank Midwest | $100M | 10.6% | +61% |
| Farmers and Merchants State Bank of Springfield | $82M | 8.8% | +2% |
| United Prairie Bank | $68M | 7.3% | +63% |
| Americana Community Bank | $61M | 6.4% | +24% |
| First Security Bank - Sleepy Eye | $53M | 5.6% | -12% |
| MidCountry Bank | $19M | 2.0% | no 2020 presence |
| Triumph State Bank | $12M | 1.2% | -5% |
The 10 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 organic growth; “no 2020 presence” means neither the institution nor a bank it later absorbed reported deposits in this county that year. Deposit figures are nominal and are not adjusted for inflation.
Part of the Mankato-New Ulm market
Brown County is one of 3 counties that make up the Mankato-New Ulm, MN market, a Combined Statistical Area (ranked #236 of 293 U.S. markets by economic output). It produces 20.8% of the market’s output and holds 21.8% of its deposits.
| Measure | Brown County | Share of parent market |
|---|---|---|
| 2024 GDP | $1.5B | 20.8% |
| Deposits | $940M | 21.8% |
| Population | 25,517 | 19.6% |
View the full Mankato-New Ulm market profile →
Recruiting in Brown County
Deposits are split among a moderate 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 Brown County, on a retained basis.
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