The Older Persons' Commission, known to locals as the OPC, offers programs and services for senior citizens in Rochester, Rochester Hills and Oakland Township. Membership is free for residents, though there is a $6 cost for a membership card and there is a charge for some events. The center features a track, gymnasium, pool, library, cafeteria, woodshop and auditorium. On-site classes include aerobics and yoga, art explorations and language courses. Various support groups meet daily, and entertainment events are planned often.