Old Second National Bank is a regional financial institution based in Aurora, Illinois, with a history that dates back to 1871. The bank is known for its stability and community focus, serving primarily the Chicago metropolitan area and surrounding communities. It combines traditional banking values with modern technology to provide personalized banking services to individuals and small to medium-sized businesses.

The bank manages a loan portfolio of approximately $3.76 billion and offers a wide range of financial services. These include business lending solutions, personal banking services like checking and savings accounts, and advanced digital banking technologies. Old Second National Bank emphasizes relationship banking, aiming to build long-term partnerships with its customers, which is especially beneficial for local businesses.

Deeply invested in community betterment, the bank actively participates in local projects and outreach activities. Its historic building, designed in 1924 and listed on the National Register of Historic Places, reflects its long-standing heritage and connection to the local community. Overall, Old Second National Bank is committed to providing comprehensive banking services while fostering strong relationships within the communities it serves.