Kolar district is a district in Karnataka

Karnataka

Karnataka , the land of the Kannadigas, is a state in South West India. It was created on 1 November 1956, with the passing of the States Reorganisation Act and this day is annually celebrated as Karnataka Rajyotsava...

 state of India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

. The town of Kolar

Kolar

Kolara is a city in the South Indian state of Karnataka. It is the headquarters of Kolar District. It is known for being one of the gold mining sites in India....

 is the district headquarters. Kolar district is located in the southern region of the State and is the eastern-most district of the Karnataka

Karnataka

Karnataka , the land of the Kannadigas, is a state in South West India. It was created on 1 November 1956, with the passing of the States Reorganisation Act and this day is annually celebrated as Karnataka Rajyotsava...

 State. The district is bounded by the Bangalore Rural district

Bangalore Rural district

Bangalore Rural District is one of the 30 districts in Karnataka. It was formed in 1986, when Bangalore district was divided into Bangalore Rural and Bangalore . Presently in Bangalore Rural district, there are 2 divisions, 4 Talukas, 35 Hoblis , 1,713 inhabited and 177 uninhabited villages, 9...

 in the west Chikballapur district in the north, Chittoor District

Chittoor district

Chittoor District , also known as Chittur, is a district of India's Andhra Pradesh state. The district headquarters is Chittoor City. The district has a population of 4,170,468 according to 2011 census of India. Chittoor district is famous for the Tirupati, Kanipakam and Sri Kalahasti temples...

 of Andhra Pradesh

Andhra Pradesh

Andhra Pradesh , is one of the 28 states of India, situated on the southeastern coast of India. It is India's fourth largest state by area and fifth largest by population. Its capital and largest city by population is Hyderabad.The total GDP of Andhra Pradesh is $100 billion and is ranked third...

 in the east and on the south by Krishnagiri

Krishnagiri District

Krishnagiri is a district in the state of Tamil Nadu, India. The municipal town of Krishnagiri is the district headquarters. In Tamil Nadu, E-Governance was first introduced at Krishnagiri district under the National e-Governance Project in Revenue, Social Welfare departments on a pilot basis...

 and Vellore district

Vellore District

Vellore district is one of the 32 districts in the Tamil Nadu state of India. Vellore City is the headquarters of this district. It had a population of 3,477,317 as of 2001. It is 37.62% urbanised...

 of Tamil Nadu

Tamil Nadu

Tamil Nadu is one of the 28 states of India. Its capital and largest city is Chennai. Tamil Nadu lies in the southernmost part of the Indian Peninsula and is bordered by the union territory of Pondicherry, and the states of Kerala, Karnataka, and Andhra Pradesh...

.

On 10 September 2007, Kolar district was bifurcated to form the new district of Chikballapur.