Winnebago County Maintenance 400 W State St Rockford, IL 61101 Phone : (815) 987-2559 Business Category Government Offices-County Legislative Bodies Winnebago County Court House--custodian Rockford, IL 61101 Phone : (815) 987-2559 Business Category County Government-Courts Courts Winnebago County Court House--maintenance Dept Rockford, IL 61101 Phone : (815) 987-2559 Business Category County Government-Courts Courts