City and Town Hall is located in downtown Rochelle, Ogle County, Illinois, United States. The City and Town Hall operates as the township history museum, holding a number of static displays on local history. Historically it served as the headquarters for city and township government as well as holding the offices of numerous state, local and national entities. The building was erected in 1884 following an 18-year disagreement about the structure's cost between the city of Rochelle and Flagg Township.