Namakkal District is surrounded by
in the north and north-east,
in the west,
in the south and south-east and Perambalur District
in the east. With an area of 3,363 sq km, Namakkal District has a population of over 1.4 million.
The main crops are paddy, jowar,
tapioca, sugarcane, groundnut and cotton. Horticultural crops like pineapples, mangoes and citrus fruits, and vegetable crops like onions, tomato and brinjal are also widely cultivated. Around 13,406 hectare of land is being irrigated using the government canals. Namakkal District is rich in natural resources such as bauxite, quartz, limestone and granite. Textile industry, transport industry, poultry units and sago and starch industry are the major industries.
The main tourist attraction is the fort of Namakkal, which covers an area of one and a half acres of flat surface and is accessible from the south-west by a flight of narrow steps. Other attractive places include Kolli Hills and Kolli Waterfalls, Aiyaru River, Tiruchengode and Kailasanathar Koil.