Kustai is a census town and it has been established in the district of Dhanbad of the Jharkhand state of India

The knowledge about any town is not complete without the identification of the demography in a comprehensive manner. Therefore a handful of demographers have carried on the surveys and research works that have made it possible to throw some light on certain aspects of its demography. These include data on population, literacy rate etc. As has been recorded in this report, the total population of Kustai has been enumerated to be 12,268. Out of it, population of male and also females can be easily deciphered. 56 and 44 are the percentage of male and female population respectively. Moreover the status of children who are residing in Kustai town also is incorporated in this comprehensive report. Thus in Kustai, 15 is the percentage of the population of those children whose age is below 6 years.

From the Census report if any one wishes he can also get acquainted with the literacy condition of the town of Kustai. Kustai town has got an average literacy rate of 62 which is even higher than that of the entire nation which has been depicted to constitute of the of 59.5 percent. This conforms to the growth of the town of Kustai. Like many other Indian places and towns, there is a wide gap between the male and female literacy. In other words 72 is the rate of male literacy, while female literacy rate is as low as 49 percent.