As per the 2001 census, Kalkulam had a total population of 6,509 with 3,121 males and 3,388 females.

Devi Matriculation School is located near to the Thuckalay bus stand.

The Padmanabhapuram Palace is located 1 km from Thuckalay Town.

The palace is built in the Travancore architectural style, containing 17th and 18th century murals, and underground passages.

The Dutch commander Eustachius De Lannoy was buried in a nearby place called Udayagiri Fort.