This Paper makes an attempt to understand how the under-nutrition of children is associated with age, sex and certain socio-economic factors. In the study we include 495 girls and 557 boys aged 3 to 18 years in which their weight and height were taken and their socio economic status was recorded. Certain socioeconomic variables were collected and classified arbitrarily into different groups or categories with a view to understanding their influence on demographic variables i.e. base on income group, educational level and family size. The data collected for the present study were quantified and analyzed statistically, using SPSS Window software. These variables were considered as risk factors of under-nutrition as indicated by odds ratios derived from logistic regression analysis. The present study has revealed that the prevalence of undernutrition, especially underweight, is significantly associated with household income and parental education. It is evident that household income is an important factor in influencing the prevalence of stunting in the present population. Unlike in the case of underweight and stunting, the effects of socioeconomic factors on wasting are not statistically significant in the present population.