Mallasamudram is a 'panchayat town' located in the Namakkal district of Tamil Nadu. It is situated in the northern region of the Namakkal district. Tiruchengode is located at a distance of 15 km. from Mallasamudram. Located en route Salem-Tiruchengode via Attayyampatti, Salem is in the north of Mallasamudram at a distance of 24 km.

The Salem airport is the nearest airport and the Salem Junction Railway Station is the nearest railway station. Geographically, the town is perched at a height of 224 metres (734 feet) above mean sea level and is located between 11.48° North latitude and 78.03° East longitude.

The Indian Census report of 2001 provides detail information about the town. The population of the town has been enumerated to be 17,125. Males account for 51% of the population and females comprises of the remaining 49%. In Mallasamudram,10% of the population is less than six years of age. The average literacy rate of the town is 62% which is higher than the national average literacy rate which is 59.5%. To be specific, the male literacy rate is 70% and the female literacy rate is 53%.

The Kandhaswami temple at Kalipatti in Mallasamudram is a major landmark.