The present study aims to examine the existing situation of age at first birth as well as to identify the factors associated behind the issue. A secondary analysis of Bangladesh Demographic and Health Survey (BDHS) data, 2011, has been performed. To measure the effect of the explanatory variables on age at first birth, we perform bivariate analysis. After performing bivariate analysis, a logistic regression analysis has been performed to assess the effect of the explanatory variables. Findings of the study revealed that educational level, household economic status, respondent’s working status have significant contribution for age at first birth among the female in Bangladesh. From the study it can be concluded that husband’s or partner’s education level, age of marriage and socio-economic status of female make a significant contribution in age at first birth.