Situated between the towns of Thearoor and Marungoor, Nallur is a small settlement in Kanniyakumari District of the southern state of India, Tamil Nadu. Resting at a height of 15 metres above mean sea level, geographically, Nallur is located between 10.92° North latitude and 79.32° East longitude. It is encircled with the towns of Suchindram in the southwest, Myladi in the southeast and Nagercoil in the west. The nearest airport is the Trivandrum International Airport. Nallur is accessible from Nagercoil, Kanyakumari and Suchindram by road.

The Indian Census report of 2001 provides detail information about the town. According to the report, Nallur had a population of 15, 266. To be specific, males constitute 50 percent of the population and females comprises of the remaining 50 percent.In Nallur, 11 percent of the population is less than six years of age. The Census report also throws light on the literacy rate of the town, which provides more information about the status of the population. The average literacy rate of Nallur is 78 percent, which is higher than the national average literacy rate that is 59.5 percent. To be more precise, the male literacy rate is as high as 82 percent while the female literacy rate is 74 percent. The awareness among the people of Nallur reflects in the literacy rate of the town.

St Xavier`s Church and Al-Masjidul Ashraf Mosque at Kottar, Nagaraja Temple, Temple and Lake at Suchindram, Sanguthurai Beach, Thovalai, Kanyakumari and Vattakottai are prime attractions around Nallur.