Mettupalayam is a municipality town and Taluk headquarters of Mettupalayam Taluk in the Coimbatore district of the Indian state of Tamil Nadu, a suburb of Coimbatore. It is the third largest town in the Coimbatore district after Coimbatore and Pollachi. It is located to the north of Coimbatore city on the way to Ooty, in the foothills of Nilgiri hills. As of 2011, the town had a population of 69,213. Mettupalayam railway station is the starting point of Nilgiri Mountain Railway and it operates the only rack railway in India connecting Ooty and Mettupalayam.

Coimbatore district is one of the 38 districts in the state of Tamil Nadu in India. Coimbatore is the administrative headquarters of the district. It is one of the most industrialized districts and a major textile, industrial, commercial, educational, information technology, healthcare and manufacturing hub of Tamil Nadu. The region is bounded by Tiruppur district in the east, Nilgiris district in the north, Erode district in the northeast, Palakkad district, Idukki district and small parts of Thrissur district and Ernakulam district of neighboring state of Kerala in the west and south respectively. As of 2011, Coimbatore district had a population of 3,458,045 with a sex ratio of 1,000 and literacy rate of 84%.