Bank Branches › Illinois › DuPage County › 8301 Cass Ave
Full-service office · FDIC office no. 432833
Old Second National Bank
8301 Cass Ave, Darien, IL 60561
Last reported 2025
$156M
peak deposits
2004
established
—
rank in county
5
names on the sign
This office filed its last FDIC deposit report in 2025. It is missing from every report since, which usually means it closed. The FDIC record doesn't give a reason. DuPage County has 250 offices open today, listed below.
| Date | Bank on the sign | Deposits | Change |
|---|---|---|---|
| Jun 30 2026 | NOT REPORTED missing from the 2026 report | ||
| Jun 30 2025 | Old Second National BankNEW NAME | $20.9M | −81% |
| Jun 30 2024 | First Merchants Bank | $110M | −29% |
| Jun 30 2023 | First Merchants Bank | $156M | +58% |
| Jun 30 2022 | First Merchants Bank | $98.6M | +7% |
| Jun 30 2021 | First Merchants Bank | $91.8M | +5% |
| Jun 30 2020 | First Merchants Bank | $87.5M | +28% |
| Jun 30 2019 | First Merchants Bank | $68.1M | +25% |
| Jun 30 2018 | First Merchants Bank | $54.5M | +13% |
| Jun 30 2017 | First Merchants Bank | $48.3M | +92% |
| Jun 30 2016 | First Merchants BankNEW NAME | $25.2M | +1% |
| Jun 30 2015 | First Merchants Bank National Association | $25.1M | +2% |
| Jun 30 2014 | First Merchants Bank National AssociationNEW NAME | $24.5M | −8% |
| Jun 30 2013 | Citizens Financial Bank | $26.6M | −13% |
| Jun 30 2012 | Citizens Financial Bank | $30.8M | +36% |
| Jun 30 2011 | Citizens Financial Bank | $22.6M | +35% |
| Jun 30 2010 | Citizens Financial Bank | $16.8M | +14% |
| Jun 30 2009 | Citizens Financial Bank | $14.7M | −7% |
| Jun 30 2008 | Citizens Financial Bank | $15.8M | −13% |
| Jun 30 2007 | Citizens Financial Bank | $18.1M | +50% |
| Jun 30 2006 | Citizens Financial BankNEW NAME | $12.1M | +68% |
| Jun 30 2005 | Citizens Financial Services, F.S.B. | $7.2M | |
| 2004-09-30 | Office established (FDIC record) — 1 years before this passbook begins | ||
Nearest open offices in DuPage County
- 0.3 miOld Second National Bank · 8001 Cass Ave, Darien
- 0.9 miJPMorgan Chase Bank, National Association · 7501 Cass Ave, Darien
- 1.1 miThe Huntington National Bank · 7335 Cass Ave, Darien
- 1.1 miRepublic Bank of Chicago · 1510 75th St, Darien
- 1.5 miFirst American Bank · 2013 75th St, Darien
- 1.7 miCitibank, National Association · 2225 75th St, Darien
- 1.8 miBMO Bank National Association · 2275 75th St, Darien
- 1.8 miFifth Third Bank, National Association · 2401 75th St, Darien
All banks in DuPage County →
Every Old Second National Bank office →
What became of Old Second National Bank →
Names on the sign
2005–2005Citizens Financial Services, F.S.B.2006–2013Citizens Financial Bank2014–2015First Merchants Bank National Association2016–2024First Merchants Bank2025–2025Old Second National Bank
The FDIC office number stays with the building when banks merge or rename, so the same office appears under each owner. Follow an earlier name to see what became of that bank.
Deposits are the balances the bank assigned to this office on June 30 of each year, in nominal dollars. Source: FDIC Summary of Deposits, office (UNINUMBR) 432833.