San Diego County's Alcoholics Anonymous Central Office — listed as Aa Central Office — operates a resource hub and bookstore in Grantville at 7075 Mission Gorge Rd, Suite B, in the 92120 ZIP. The office runs a telephone hotline staffed by recovery volunteers who connect callers with meeting locations across the county, and the recovery ecosystem the office supports includes clinical referral partners such as Alter Behavioral Health in College Area. The in-person bookstore carries Alcoholics Anonymous core texts, workbooks, and conference-approved literature alongside sobriety tokens ranging from 24-hour aluminum chips to multi-decade brass medallions. Mission Gorge Road is the primary commercial artery through Grantville, and the Central Office's position on this corridor provides visibility to the auto-shop, brewery, and service-business traffic that defines the neighborhood. The office's Group Business Center gives AA groups access to a computer, printer, scanner, and laminator for meeting-related administrative work. A monthly San Diego Coordinator Newsletter tracks fellowship announcements, sobriety anniversaries, and service committee schedules. The meeting directory covers groups from Grantville's Mission Gorge corridor to San Carlos, Del Cerro, and Allied Gardens, with venue hosts ranging from church fellowship halls to community studios in the same blocks where MadChair Guitar Lessons and other small-format Grantville businesses operate. The text-alert system (AAfellowship to 833-906-1069) pushes event and service-opportunity notifications to subscribers countywide.