Community Cities Alton Boyden Hawarden Hull Ireton Orange City Rock Valley Sheldon Sioux Center Schools Boyden-Hull Public MOC-FV Rock Valley Public Rock Valley Christian Sheldon Public Sioux Center Public Sioux Center Christian Spalding Catholic Trinity Christian High School Unity Christian High Western Christian High West Sioux High Colleges Dordt College Northwestern College NCC Miscellaneous Sioux County Geneology Sioux County Extension Compass Pointe U.S. Homeland Security Iowa Sky-Warn Orange City Fire Department