Old Second National Bank
Headquarters: Aurora, Illinois
Overview
Old Second National Bank is an FDIC-insured bank headquartered in Aurora, Illinois. It reported $6.86B in assets and $5.47B in deposits for the period ending June 30, 2026. Bankular currently lists 57 branch locations.
What Bankular checked
These dates identify the official records and review steps supporting this profile.
Quarterly change
What changed since the previous report
March 31, 2026 to June 30, 2026
These comparisons use consecutive official regulatory reporting periods. A change is descriptive and is not a recommendation or safety rating.
Financial indicators
Capital, profitability and credit quality
These are the latest reported capital, profitability and credit-quality measures available for this institution. Read the figures together rather than as a single safety rating.
Branch footprint
Where Old Second National Bank has branches
Explore the cities with the most currently listed locations. Branch hours can change, so confirm current lobby, drive-through and appointment hours with the institution before visiting.
Locations
Find a branch of Old Second National Bank
Bartlett Branch
1061 W Stearns Rd, Bartlett, Illinois, 60103
Full-service branch · Opened October 27, 1986
Batavia Branch
1991 W Wilson St, Batavia, Illinois, 60510
Full-service branch · Opened December 22, 1986
Bensenville Branch
2 S York Rd, Bensenville, Illinois, 60106
Full-service branch · Opened March 15, 1989
Bolingbrook East
672 E Boughton Rd, Bolingbrook, Illinois, 60440
Full-service branch · Opened July 30, 1991
Bolingbrook West
1104 W Boughton Rd, Bolingbrook, Illinois, 60440
Full-service branch · Opened April 3, 1995
Burlington Branch
194 S Main St, Burlington, Illinois, 60109
Full-service branch · Opened September 10, 1919
Financial overview
Latest reported figures
Through June 30, 2026
Financial trends
How the balance sheet has changed
Compare recent quarters to see the direction of assets, deposits and loans.
| Quarter | Assets | Deposits | Net loans | ROA |
|---|---|---|---|---|
| June 30, 2026 | $6.86B | $5.47B | $5.18B | 1.69% |
| March 31, 2026 | $6.85B | $5.60B | $5.12B | 1.61% |
| December 31, 2025 | $6.90B | $5.66B | $5.18B | 1.46% |
| September 30, 2025 | $6.98B | $5.80B | $5.19B | 1.32% |
| June 30, 2025 | $5.70B | $4.87B | $3.96B | 1.61% |
| March 31, 2025 | $5.73B | $4.93B | $3.90B | 1.54% |
| December 31, 2024 | $5.65B | $4.85B | $3.94B | 1.63% |
| September 30, 2024 | $5.67B | $4.52B | $3.95B | 1.68% |
Size and reach
How this institution compares
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More on Old Second National Bank
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Branch locations
57 listed locations.
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Explore →State banking market
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Explore →Aurora banking market
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Explore →Sources and methodology
Review the official sources and reporting periods.
Explore →Frequently asked questions
Is Old Second National Bank federally insured?
Yes. Bankular identifies this institution in FDIC records under certificate 3603.
Where is Old Second National Bank headquartered?
Old Second National Bank is headquartered in Aurora, Illinois, at 37 S River St, Aurora, Illinois, 60506.
How large is Old Second National Bank?
It reported $6.86B in assets and $5.47B in deposits for the period ending June 30, 2026.
How many locations does Old Second National Bank have?
Bankular currently lists 57 branch locations for this institution.
Data sources and methodology
Bankular combines official regulatory records with institution-published product information. The detailed sources are available below for readers who want to verify a figure.