With the increasing prevalence of adults with autism spectrum disorder (ASD), research examining the service experiences of this population is greatly needed. The current study investigated service use, unmet needs, and obstacles to service access for a large sample of adults with ASD. After accounting for various demographic factors known to impact service usage and needs, living situation was a significant predictor of service use, needs, and obstacles to services. Adults with ASD living with family reported less service use, higher unmet need, and more obstacles to accessing services. With more than half of this adult sample living with family, results have clear public policy implications to support the increasing population of adults with ASD living with aging caregivers.