Home>Choose State>Cities in Illinois>Institutions in Du Quoin>Du Quoin State Bank Locations in Du Quoin Du Quoin State Bank Branch Locations in Du Quoin, IL 1. Du Quoin State Bank - Du Quoin Branch 15 East Main Street, Du Quoin, IL 62832 (618) 542-2111 View Branch 2. Du Quoin State Bank - Southtowne Facility Branch Highway 51 South, Du Quoin, IL 62832 View Branch