Area 4 Agency on Aging Community Services Area 4 Agency on Aging Visit Website 2260 Park Towne Circle Suite 100 Sacramento, California 95825 916-486-1876 About Map About The local Area Agency on Aging developing and coordinating services for our 7-county region (Nevada, Placer, Sacramento, Sierra, Sutter, Yolo & Yuba) for the 60+ population. View Larger Map