Thondamuthur is a legislative assembly in Coimbatore district in Tamil Nadu, which includes the town, Thondamuthur. Its State Assembly Constituency number is 119. Thondamuthur assembly constituency is part of Pollachi Lok Sabha constituency. It was a part of Nilgiris Lok Sabha constituency till 2007. Election was not held in the year 1957. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu, in India.

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%.