Union County Civil Defense 209 E Main St Elk Point, SD 57025 Phone : (605) 356-3354 Business Category Government Offices-County Public Order & Safety Emergency Disaster Services Civil Defense Equipment & Supplies Government Offices & Public Schools Union County Planning & Zoning 209 E Main St Elk Point, SD 57025 Phone : (605) 356-3354 Business Category Government Offices-County Administration Of Urban Planning & Community/Rural Dev Government Offices & Public Schools