CNB Bank & Trust now has 18 locations to better serve its customers: Alton, Brighton, Carlinville, Carrollton, Chapin, Clayton-MO, Edwardsville / GlenCarbon, Hillsboro, Jacksonville (2), Jerseyville, Litchfield, Oak Forest, Palos Heights, Pittsfield, Taylorville, Tinley Park and Virden. The roots go back to the mid-nineteenth century with the founding of a bank in Carrollton, IL, in 1854. Records show this to be the oldest continuously active bank headquartered in Illinois.