In 2011, Hadavu had a total population of 1158 people consisting of 710 male and 81 female residents.

The village occupies a total area of 225.29 hecatres with a population density of 5.14 people per hectare.

[1] The primary source of livelihood for the village is agricultutre, primarily paddy cultivation.

[2] The village is close to National Highway 66 and is located along the Trasi-Maravanthe beachfront.

It is connected to the mainland via a narrow bridge across the Souparnika near Maharajaswamy Varahaswamy Temple.