Explore senior living apartments in O'Fallon, MO, with 19 options on ForRent.com designed to meet the needs of active adults and retirees. These apartments feature accessible layouts, community amenities, and a focus on comfort and convenience. Many senior living communities in O'Fallon offer services such as on-site maintenance, social activities, and proximity to healthcare facilities. Whether you’re looking for a quiet, independent living space or a community with opportunities to connect with neighbors, senior living apartments in O'Fallon provide the perfect setting.