Gem County, Idaho, a county in the Boise City-Mountain Home-Ontario, ID-OR market, holds $297M in deposits across 4 insured institutions and 4 branches. Wells Fargo Bank, National Association is the largest deposit holder at 37.3% share. The top three institutions hold 89.6% of deposits, which places the county in the concentrated band. Deposits have grown 47.5% since 2020. It produces $521M of output, ranking #1,349 of the 1,523 counties within a CSA or MSA by economic output.
Deposit trend
Branches: 4 in 2020 to 4 in 2025. Institutions: 4 to 4. Top-three share: 86.7% to 89.6%.
Leading institutions by deposits
| Institution | Deposits | Share | 5‑yr |
|---|---|---|---|
| Wells Fargo Bank, National Association | $111M | 37.3% | +70% |
| U.S. Bank National Association | $84M | 28.2% | +23% |
| First Interstate Bank | $72M | 24.1% | +74% |
| KeyBank National Association | $31M | 10.4% | +15% |
The 4 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 Boise City-Mountain Home-Ontario market
Gem County is one of 8 counties that make up the Boise City-Mountain Home-Ontario, ID-OR market, a Combined Statistical Area (ranked #75 of 293 U.S. markets by economic output). It produces 1.1% of the market’s output and holds 1.5% of its deposits.
| Measure | Gem County | Share of Boise City-Mountain Home-Ontario market |
|---|---|---|
| 2024 GDP | $521M | 1.1% |
| Deposits | $297M | 1.5% |
| Population | 21,773 | 2.3% |
View the full Boise City-Mountain Home-Ontario market profile →
Recruiting in Gem 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 Gem County, on a retained basis.
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