Child mortality rates are crucial statistics that portray a country’s level of socio-economic development. In a global scenario, India accounts for thirty-three percent of child deaths, yearly. The chief reasons attributed to this being ineffective neonatal care, inadequate breastfeeding, undernourishment, minimal endurance and life-threatening occurrence of infectious diseases. Thus, there is a need to study the regional and state-wise analysis of the causes of under-5 deaths and to find factors such as socio-economic developments and health services which directly or indirectly influences in reducing the child mortality rate. The main objective of the paper is to examine the infant mortality rate trend lines for rural and urban areas of Tamil Nadu and try to forecast these rates for the next decade.