Isabella County, Michigan, a core county of the Mount Pleasant-Alma, MI market, holds $1.3B in deposits across 5 insured institutions and 17 branches. Isabella Bank is the largest deposit holder at 55.0% share. The top three institutions hold 90.0% of deposits, which places the county in the concentrated band. Deposits have grown 16.4% since 2020 while the branch count fell by 2. It produces $2.5B of output, ranking #840 of the 1,523 counties within a CSA or MSA by economic output.
Deposit trend
Branches: 19 in 2020 to 17 in 2025. Institutions: 6 to 5. Top-three share: 89.3% to 90.0%.
Leading institutions by deposits
| Institution | Deposits | Share | 5‑yr |
|---|---|---|---|
| Isabella Bank | $741M | 55.0% | +8% |
| Mercantile Bank | $340M | 25.2% | +55% |
| PNC Bank, National Association | $132M | 9.8% | +4% |
| Fifth Third Bank, National Association | $75M | 5.5% | +55% |
| The Huntington National Bank | $60M | 4.4% | +32% |
The 5 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 Mount Pleasant-Alma market
Isabella County is one of 2 counties that make up the Mount Pleasant-Alma, MI market, a Combined Statistical Area (ranked #281 of 293 U.S. markets by economic output). It produces 61.9% of the market’s output and holds 65.0% of its deposits.
| Measure | Isabella County | Share of Mount Pleasant-Alma market |
|---|---|---|
| 2024 GDP | $2.5B | 61.9% |
| Deposits | $1.3B | 65.0% |
| Population | 64,691 | 61.1% |
See the Mount Pleasant-Alma market in Market Intelligence →
Recruiting in Isabella 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 Isabella County, on a retained basis.
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