This study has attempted to identify some socio-economic, demographic and cultural variables by which age at marriage in Bangladesh is determined. Data have been collected from both rural and urban women to get a comparative picture of age at marriage using the face-to-face interview technique. From the findings of the regression analysis of this study, it was found that all the independent variables in combination explain 37.4 percent variance of the dependent variable in rural area. The explanatory power of the regression analysis model for urban area was more powerful in comparison to rural area. It was found that all the independent variables in combination, explained 48.8 percent variance of the dependent variable.