Dekalb Tri-county Health Department 508 S Polk St Maysville, MO 64469 Phone : (816) 449-5706 Business Category Administration Of Public Health Programs County Offices Dekalb County--tri-county Health Department Maysville, MO 64469 Phone : (816) 449-5706 Business Category Government Offices-County Administration Of Public Health Programs Government Offices & Public Schools Dekalb County Of--tri County Health Department Maysville, MO 64469 Phone : (816) 449-5706 Business Category Government Offices-County Government Offices & Public Schools