Lyon County Of--health Services 803 S Greene St Rock Rapids, IA 51246 Phone : (712) 472-4081 Business Category Government Offices-County Government Offices & Public Schools Lyon County Health Service 315 1st Ave # 208 Rock Rapids, IA 51246 Phone : (712) 472-4081 Business Category Government Offices-County Accident & Health Insurance Health Care Plans Health & Wellness Programs Photographers-Medical & Dental Administration Of Public Health Programs Government Offices & Public Schools