Little is known of injury outcomes among non-hospitalised injured populations. This study examined the occurrence of poor outcomes 3 months after injury among the 2856 participants in the Prospective Outcomes of Injury Study, most of whom had sustained injuries considered of minor severity (by injury severity scoring) and had not received treatment at a hospital facility. The prevalence of poor outcomes was high across all health, physical functioning and social functioning domains and expectation characteristics examined, including for those participants with the 'least severe' injuries. Approximately half of the cohort reported experiencing moderate to high pain or psychological distress and reduced social participation, and three-quarters did not consider themselves recovered. Our findings demonstrate that, to obtain an accurate understanding of injury burden, injury outcome research should not focus only on those injured persons who are hospitalised.