This study examines effects and interactions of socioeconomic status, access to water supply and sanitation, and breast-feeding practices in relation to child growth in two provincial cities in the Philippines. Multivariate analysis identified food expenditure per head, education of the household head and gender of the child as significant predictors of nutritional status. The duration of partial and full breast-feeding was negatively (though non-significantly) associated with growth. Sanitation facilities and breast-feeding are, however, important determinants during the first year of life. Among children over 1 year of age, socioeconomic variables and gender are the most important predictors. Breast-feeding is shown to provide more important health benefits for children in lower income households. The need for further studies on the causes of gender differences in nutritional status was apparent.