Marion County, Illinois, a core county of the St. Louis-St. Charles-Farmington, MO-IL market, holds $1.1B in deposits across 12 insured institutions and 17 branches. Peoples National Bank is the largest deposit holder at 29.2% share. The top three banks hold 52% of deposits, which places the county in the Moderate band. Deposits have grown 6.8% since 2021 while the branch count fell by 10.5%. It produced $1.4B of real gross domestic product in 2024, ranking #1,080 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: 19 in 2021 to 17 in 2026. Institutions: 13 to 12. Top-three share: 47% to 52%.
Institutions by deposits
| Institution | Deposits | Share | 5‑yr deposits |
|---|---|---|---|
| Peoples National Bank | $310M | 29.2% | +24% |
| Community Partners Savings Bank | $137M | 12.9% | +13% |
| The Iuka State Bank | $104M | 9.8% | +7% |
| Midwest National Bank | $95M | 8.9% | +58% |
| Midland States Bank | $79M | 7.4% | +3% |
| Kinmundy Bank | $69M | 6.5% | +32% |
| U.S. Bank | $59M | 5.6% | -18% |
| Farmers State Bank of Hoffman | $55M | 5.1% | +8% |
| The Peoples State Bank of Newton, Illinois | $43M | 4.1% | +20% |
| The Bradford National Bank of Greenville | $39M | 3.7% | +48% |
| First Financial Bank | $39M | 3.7% | -7% |
| The FNB Community Bank | $33M | 3.1% | +16% |
The 12 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
Marion 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 0.7% of the market’s output and holds 0.7% of its deposits.
| Measure | Marion County | Share of parent market |
|---|---|---|
| 2024 GDP | $1.4B | 0.7% |
| Deposits | $1.1B | 0.7% |
| Population | 36,382 | 1.2% |
View the full St. Louis-St. Charles-Farmington market profile →
Recruiting in Marion 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 Marion County.
See how we help banks recruit commercial banking talent