Female disadvantage in mortality appears to be the highest in post-neonatal period in South Asia. We aim to explore the differential pattern of survival status of male and female children during post-neonatal period by types of family. For this purpose we used several rounds Demographic Health Surveys conducted in Bangladesh, India, Nepal and Pakistan since early nineties. We used mortality ratio by gender to examine the relative disadvantage of females in mortality during post neonatal period. Further we carried out cox proportional hazard model to examine the association between family type and mortality. In general, joint family with in laws is appearing to be conducive for reducing mortality risk during post-natal period. However the advantage of having joint family with in-laws is different for male and female children.