Clinton County, Illinois, a county in the St. Louis-St. Charles-Farmington, MO-IL market, holds $1.6B in deposits across 13 insured institutions and 23 branches. Germantown Trust & Savings Bank is the largest deposit holder at 27.0% share. The top three banks hold 61% of deposits, which places the county in the Concentrated band. Deposits have grown 23.9% since 2021 while the branch count rose by 4.5%. It produced $1.2B of real gross domestic product in 2024, ranking #1,151 of the 1,523 ranked counties 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: 22 in 2021 to 23 in 2026. Institutions: 12 to 13. Top-three share: 63% to 61%.
Institutions by deposits
| Institution | Deposits | Share | 5‑yr deposits |
|---|---|---|---|
| Germantown Trust & Savings Bank | $433M | 27.0% | +19% |
| FCB Banks | $291M | 18.1% | +16% |
| 1NB Bank | $259M | 16.1% | +30% |
| Dieterich Bank | $187M | 11.7% | +20% |
| Farmers State Bank of Hoffman | $105M | 6.5% | +11% |
| Peoples National Bank | $82M | 5.1% | +62% |
| Constitution Bank | $75M | 4.7% | +112% |
| Regions Bank | $72M | 4.5% | no 2021 presence |
| U.S. Bank | $42M | 2.6% | -17% |
| First FSB of Mascoutah | $26M | 1.6% | +76% |
| Bank of Belleville | $15M | 0.9% | +535% |
| Midwest National Bank | $14M | 0.8% | no 2021 presence |
| The Bradford National Bank of Greenville | $4M | 0.3% | no 2021 presence |
The 13 insured institutions with a branch presence in this county, per the FDIC Summary of Deposits, June 30, 2026. Five-year change compares the same institution’s county deposits in 2021 and 2026. 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. “No 2021 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 St. Louis-St. Charles-Farmington market
Clinton County is one of 17 counties that make up the St. Louis-St. Charles-Farmington, MO-IL market, a Combined Statistical Area (ranked #27 of 293 U.S. markets by economic output). It produces 0.6% of the market’s output and holds 1.1% of its deposits.
| Measure | Clinton County | Share of parent market |
|---|---|---|
| 2024 GDP | $1.2B | 0.6% |
| Deposits | $1.6B | 1.1% |
| Population | 37,128 | 1.3% |
View the full St. Louis-St. Charles-Farmington market profile →
Recruiting in Clinton 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 Clinton County.
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