This report presents a community health assessment focused on childhood obesity in Ontario, Canada, targeting children under five years old. It identifies the population at risk and provides a rationale for selecting the Health Promotion model, emphasizing its comprehensive approach and focus on social determinants of health. Key social determinants, including physical activity, poverty, and education, are analyzed for their impact on childhood obesity. The assessment incorporates data on population size, employment rates, education levels, community support services, healthcare accessibility, and homelessness in Ontario. Based on the assessment, recommendations are made to improve community health, such as government-subsidized healthy foods, awareness programs, physical activity initiatives, and workshops for parents. The report concludes that childhood obesity is a significant threat, influenced by socioeconomic status, parental education, and lack of physical activity.