City hall summary
St. Clair County, Illinois has a recorded population of 251,149. For city hall, the page currently shows service channels: ~ 11, departments and desks: ~ 8, service areas: ~ 9, public reception cases: ~ 15, residents covered: 251,149. The figures use the available U.S. geography, population, housing and local-structure data for this place.
Calculated from U.S. geography, population and local structure. Public messages are moderated before publication.