Prosecuting Attorney Child Sup 300 Main St Hillsboro, MO 63050 Phone : (636) 797-5338 Business Category Legal Counsel & Prosecution Jefferson County Court House--23rd Judicial Circuit, Prosecuting Attorney, Child Support Division Hillsboro, MO 63050 Phone : (636) 797-5338 Business Category Government Offices-County Social Service & Welfare Organizations Individual & Family Social Services Child Support Services County Government-Courts Courts Government Offices & Public Schools