Welcome to Manteno, Illinois. Manteno, Illinois is located approximately 40 miles south of Chicago's loop. It's that time again! H&R Block is now H&R Block Financial Center! Come and see our new look and new services! We reside in Kankakee County, Illinois and have approximately 7, 000 residents. We take pride in the fact that Manteno is considered one of Kankakee County's fastest growing ...