The district of Krishnagiri was carved out of erstwhile Dharmapuri District on 2nd February 2004 and is located in the north western part of Tamil Nadu. The district area consists of many granite hillocks and hence the name Krishnagiri (Krishna referring to ‘black’ and giri referring to ‘hill’).
The municipal town of Krishnagiri is the district headquarters. The district is bounded by State of Andhra Pradesh in the north, Dharmapuri District in the south, Vellore and Thiruvannamalai Districts in the east and Karnataka State in the west.
The district is the largest producers of mangoes in India. The place is also famous for the granite industry with quarries and processing units spread around the district. One of the most industrialized places in the state, Hosur, is located in Krishnagiri.