OH: Cincinnati The Council on Aging of Southwestern Ohio (COA) is an Area Agency on Aging (AAA) that services the Cincinnati area. The Greater Cincinnati Health Council (GCHC) is a non-profit organization that provides a forum for hospital and health care leaders to connect to create a stronger health care community. Overview Maps of Ohio’s 60+ population by county 1990-2050 Frail Elders in the Cincinnati Region: Data Examples [Link will download a PowerPoint presentation]