Sioux County

Sioux County Courthouse
210 Central Avenue SW, Box 233
Orange City, IA 51041
Hours: 8:00 am - 4:30 pm
Supervisor Meetings: Every other Tuesday
Website: https://siouxcountyia.gov/

Adair Adams Allamakee Appanoose Audubon Benton BlackHawk Boone Bremer Buchanan BuenaVista Butler Calhoun Carroll Cass Cedar CerroGordo Cherokee Chickasaw Clarke Clay Clayton Clinton Crawford Dallas Davis Decatur Delaware DesMoines Dickinson Dubuque Emmet Fayette Floyd Franklin Fremont Greene Grundy Guthrie Hamilton Hancock Hardin Harrison Henry Howard Humboldt Ida Iowa Jackson Jasper Jefferson Johnson Jones Keokuk Kossuth Lee Linn Louisa Lucas Lyon Madison Mahaska Marion Marshall Mills Mitchell Monona Monroe Montgomery Muscatine O'Brien Osceola Page PaloAlto Plymouth Pocahontas Polk Pottawattamie Poweshiek Ringgold Sac Scott Shelby Sioux Story Tama Taylor Union Van Buren Wapello Warren Washington Wayne Webster Winnebago Winneshiek Woodbury Worth Wright
Name Office Address City State Zip Code Phone Number Fax Number Party
Name Office Address City State Zip Code Phone Number Fax Number Party
Ross Simmelink Assessor PO Box 48 Orange City IA 51041 (712) 737-4274 (712) 737-6482
Joe Van Tol Auditor PO Box 18 Orange City IA 51041 (712) 737-2216 (712) 737-2537 R
Mariela Rodriguez Community Services P.O. Box 233 Orange City IA 51041 (712) 737-2999 (712) 737-3564
Robert Klocke Conservation 4051 Cherry Ave Hawarden IA 51023 (712) 552-1047 (712) 552-3047
Thomas Kunstle County Attorney PO Box 168 Orange City IA 51041 (712) 737-2457 (712) 737-4560 R
Ryan De Kruyf Emergency Management 4363 Ironwood Ave, Ste 3 Orange City IA 51041 (712) 737-4010 (712) 737-3006
Joel Sikkema Engineer/Secondary Roads PO Box 17 Orange City IA 51041 (712) 737-2248 (712) 737-2757
Melissa Nation Environmental Health 417 E. Kanseville Blvd Council Bluffs IA 51503 (712) 737-3820 (712) 737-3006
Micah Van Maanen IT PO Box 18 Orange City IA 51041 (712) 737-6818 (712) 737-2537
Shane Walter Planning and Zoning PO Box 375 Orange City IA 51041 (712) 737-2999 (712) 737-3006
Teri Bos Public Health 705 Hwy 10 West Orange City IA 51041 (712) 737-2971 (712) 737-3006
Jessica Kooiker Recorder PO Box 48 Orange City IA 51041 (712) 737-2229 (712) 737-3032 R
Nate Huizenga Sheriff 4363 Ironwood Ave, Ste 1 Orange City IA 51041 (712) 737-2280 (712) 737-8185 R
Craig Hoftyzer Supervisor PO Box 18 Orange City IA 51041 (712) 737-2216 (712) 737-2537 R
Dan Altena Supervisor PO Box 18 Orange City IA 51041 (712) 737-2216 (712) 737-2537 R
Jerry Muilenburg Supervisor PO Box 18 Orange City IA 51041 (712) 737-2216 (712) 737-2537 R
John Degen Supervisor PO Box 18 Orange City IA 51041 (712) 737-2216 (712) 737-2537 R
Mr. Carl L. Vande Weerd Supervisor PO Box 18 Orange City IA 51041 (712) 737-2216 (712) 737-2537 R
Dan Zomermaand Treasurer PO Box 77 Orange City IA 51041 (712) 737-3505 (712) 737-8170 R
Kathi Wetter Veterans Affairs P.O. Box 233 Orange City IA 51041 (712) 737-2999 (712) 737-3564
Last Updated: 06/17/2026 08:00 AM