Bank of O'Fallon
2 detailed locations
Local banking directory
Search detailed locations Banks and Bank Branches in O'Fallon, Illinois
The FDIC reported 4 deposit-reporting offices from 3 institutions in O'Fallon as of June 30, 2025. Bankular currently provides 5 detailed location pages with addresses, maps and directions.
FDIC-reported offices4
Institutions reporting3
Detailed location pages5
Reported branch deposits$355.8M
SOD reporting dateJune 30, 2025
Reported-office totals come from the annual FDIC Summary of Deposits survey. Maps and branch-detail links appear only for locations with a validated Bankular location page.
Market analysis
What the deposit data shows
Largest institutionBank of O'Fallon89.84% of deposits
Top three share100.00%
Deposit HHI8,136Higher concentration
Current detailed pages51 more than the June 2025 SOD count
Bank of O'Fallon held 89.84% of reported branch deposits in O'Fallon. The three largest institutions together held 100.00%. Bankular places the resulting HHI of 8,136 in its higher concentration descriptive band.
Branch map
Detailed bank locations in O'Fallon
Select a marker to open the detailed location page.
Detailed directory
Institutions with validated location pages
First Community Credit Union
1 detailed location
First National Bank of Waterloo
1 detailed location
The Farmers and Merchants National Bank of Nashville
1 detailed location
Location pages
Detailed bank locations in O'Fallon
Bank of O'Fallon
2 detailed locationsFirst Community Credit Union
1 detailed locationFirst National Bank of Waterloo
1 detailed locationThe Farmers and Merchants National Bank of Nashville
1 detailed locationLocal deposit market
Reported offices, deposits and market share
| Institution | Reported offices | Deposits | Share |
|---|---|---|---|
| Bank of O'Fallon | 2 | $319.7M | 89.84% |
| First National Bank of Waterloo | 1 | $26.9M | 7.57% |
| The Farmers and Merchants National Bank of Nashville | 1 | $9.2M | 2.59% |