Mercer County Of--agency On Aging, Shenango Valley Multi Service Center 1020 Spearman Ave Farrell, PA 16121 Phone : (724) 981-7950 Business Category Government Offices-County Government Offices & Public Schools Mercer County Agency On Aging 220 N Buhl Farm Dr Hermitage, PA 16148 Phone : (724) 981-7950 Business Category Administration Of Social Human Resource & Income Maintenance Programs Mercer County Area Agency On Aging Inc , Phone : (724) 981-7950 Mercer County Area Agency On Aging Inc Business Category