JEFFERSON COUNTY AREA AGENCY ON AGING Jefferson County Area Agency on Aging maximizes the quality of life, independence, health and safety of older adults. 186 Main Street, Ste. 2 Brookville, PA 15825 814-849-3096 jcaaa.org JEFFERSON COUNTY AREA AGENCY ON AGING Jefferson County Area Agency on Aging maximizes the quality of life, independence, health and safety of older adults. 186 Main Street, Ste. 2 Brookville, PA 15825 814-849-3096 jcaaa.org