Udumalpet is a town and a municipality in Tirupur district, Indian state of Tamil Nadu.
Pollachi to Udumalpet 20km distance. The name in the ancient days was "UDUMALAI" and due to its rural atmosphere, it was also named as Pettai. In latter period it was changed as "UDUMALAIPETTAI" in Tamil.
The city was previously under Coimbatore district but was moved under the newly formed Tirupur district in October 2008. The change was opposed by many of the residents but it was not reverted back. In short known as Udumalai, the city is surrounded by the high mountains of Western Ghats on three sides. This Municipal town has a population of about 60,000. Udumalpet is an industrial town with number of textile, paper and farming related industries established here. Famous landmarks and monuments in and around the town includes Thirumoorthy Hills,which has the Thirumurthi water reservoir that provides water supply to the town, Mariamman Temple, an old worshiping place in the town center and Amaravathi Reservoir, across Amaravathi River which provides irrigation to the agricultural lands around the town. Both Thirumoorthy Hills and Amaravathi Reservoir provide recreational activities such as boating, fishing and hiking and attract tourists from other parts of the state. Udumalpet lies between the famous temple town of Palani (35 km)and Pollachi (28 km)on the National Highway No.209. Udumalpet is also connected by a metre gauge railway line. Udumalpet assembly constituency is part of Pollachi.