Marshall County Sanitarian 1 E Main St Marshalltown, IA 50158 Phone : (641) 754-6370 Business Category Government Offices-County Legislative Bodies Administration Of Urban Planning & Community/Rural Dev Marshall County Of--zoning Sanitarian Weed Comm Courthouse Marshalltown, IA 50158 Phone : (641) 754-6370 Business Category Government Offices-County Government Offices & Public Schools