This study assessed the anthropometric indices and dietary intake of rural and urban school age children in selected Local Government Areas (LGAs) of Ogun state. A multistage sampling technique was used to select one thousand one hundred and thirty two school age children from the three senatorial districts. A pre-tested and structured questionnaire was used to obtain information on socio-economic characteristics as well as anthropometric measurements (weight, height and mid-upper arm circumference) were taken using standard anthropometric procedures and nutrients intake estimated from the 24-hr dietary recall information. Data were analyzed using frequency counts, percentages, means, standard deviations, correlation, T-test and Chi-Square. Results showed that 36.5% of the respondent families earned less than two hundred thousand naira annually. Also, 43.0% and 62.0% of the mothers had secondary and tertiary education respectively. WASH practices showed that 61.1% of the respondents did not have a place for hand washing and 55.6% used dirty water for washing their hands. The mean weight, height and mid-upper arm circumference of the children were 25.8kg, 1.30m, and 187.29cm respectively. Prevalence of wasting, stunting, underweight and overweight were 2.7, 20.6, 18.5 and 6.1% respectively, with significant gender (p=0.000) and sector (p=0.003) differences. Dietary intake showed that energy intake was above 60% RDA for both sexes and in the LGAs while protein and fat intake for females in urban LGA was above 80% RDA except for some micronutrients that were below 50% RDA (Vit A-42.5% RDA, Calcium -45% RDA and Iron -48.9% RDA). Chi-square showed a significant association between maternal education and stunting (p=0.014), family income and stunting (p=0.038) and wasting (p=0.003) while correlation shows a significant relationship between micronutrients and economic status of the family because stunting was related to vitamin A (p= -0.321) and iron (p= -0.120). This study concluded that a significant relationship exists between socio economic status and nutritional status. Hence, the study recommended a national policy for improved sanitation, school feeding programme and combining such a policy with better access to basic social services including education and health care.