This project is examining the relationship between neighbourhood socioeconomic disadvantage with prevalence, health service use, and developmental outcomes of children with Autism Spectrum Disorder (ASD). Research shows that health is unevenly distributed across socioeconomic status (SES) – those living in poverty tend to have poorer health. It has been suggested that characteristics of individuals (e.g. individual SES) do not explain inequalities in health outcomes in a population. There is growing recognition that characteristics of groups, such as characteristics of neighbourhoods, may be the most important determinants of health of a population – which speaks to the importance of examining the impact of neighbourhood SES on the health of children with ASD.