Onnalvadi

Achettipalli is a village in the Hosur taluk of Krishnagiri district, Tamil Nadu, India.

Adhiyamaan College of Engineering (ACE) is an Autonomous Engineering college located at Hosur, Tamil Nadu, India.

Mathigiri is a neighborhood in Hosur in Krishnagiri district in the Indian state of Tamil Nadu.

The Chandra Choodeswarar Temple is an ancient Shiva temple located on a rocky hill in the town of Hosur, Krishnagiri District, Tamil Nadu. The main deities of the temple are Shiva, depicted as the Shiva linga and the Goddess Parvati, depicted as 'Maragathambal'. This is the only temple in the Krishnagiri district that has got a golden car that is used for temple functions.

Rayakottai railway station is a train station serving the town of Hosur in Krishnagiri district of Tamil Nadu. The station falls on the Salem–Bangalore line and is the closest railway link for the town of Krishnagiri, a district headquarters in Tamil Nadu.

Hosur railway station (station code: HSRA) is a railway station serving Hosur,

The Our Lady of Good Health Church is a Roman Catholic church situated in Mathigiri, a suburban area adjacent to Hosur, Tamil Nadu, India. According to Catholic Missionary records, Mathigiri holds a rich historical significance due to the presence of M.E.P Fathers who established settlements in the early 19th century. This is considered to be the mother parish church of Hosur and Denkanikottai belt. Now this servers under the jurisdiction of Dharmapuri Diocese.

Hosur division is a revenue division in Tamil Nadu, India.

The Hosur block is a revenue block in the Krishnagiri district of Tamil Nadu, India. It has a total of 26 panchayat villages.

Hosur is a state assembly constituency in Krishnagiri district in Tamil Nadu, India. Its State Assembly Constituency number is 55. It consists of a portion of Hosur taluk. It forms a part of Krishnagiri Lok Sabha constituency for national elections to the Parliament of India. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu, in India.

Hosur taluka is a taluka of Krishnagiri district of the Indian state of Tamil Nadu. The headquarters is the City of Hosur. This taluk consists of 76 Revenue Villages

Kenilworth Fort or Kenilworth Castle is situated in Hosur in the present day Krishnagiri district in the state of Tamil Nadu in India. Its architecture is based on that of Kenilworth Castle in England, making it probably the only fort in India built to resemble an English castle. Mr. Brett, the collector of Salem between 1859 and 1862, built this at his wife's request to be their residence, hence it is also sometimes called Brett's Fort. It was purchased by the government in 1875.