Sioux City Mayors Office 405 6th St Sioux City, IA 51101 Phone : (712) 279-6102 Sioux City Mayors Office Business Category Government Offices-City Village & Twp Legislative Bodies Government Offices & Public Schools Sioux City City Of--city Manager Sioux City, IA 51101 Phone : (712) 279-6102 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools Sioux City City Of--mayors Office Sioux City, IA 51101 Phone : (712) 279-6102 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools