Sirohi District is a district of Rajasthan state in western India. The city of Sirohi is the district headquarters. As of 2011 it is the third least populous district of Rajasthan (out of 33), after Jaisalmer and Pratapgarh. In 1948, Sirohi was taken over by Bombay State from 15 January 1949 to 25 January 1950. Shortly thereafter, on 25 January 1950, the former state was partitioned with Abu Road tehsil and part of Delwara tehsil being joined to Bombay and the remaining portion merging with Rajasthan. At that time an area of 787 km2 consisting of Abu Road tehsil and a part of Delwara tehsil was merged with then Bombay state, but it was returned to Sirohi district of Rajasthan State on 1 November 1956. Sirohi is also called as "Dev Nagari" since ancient times because of many temples and shrines in the district. Sirohi is also famous for manufacturing of double edged swords, from the time of the Chauhan Deora rulers (15th century AD) until 1947. The district has an area of 5136 km2. It is bordered on the west by Jalor District, on the north by Pali District, on the east by Udaipur District, and on the south by Banas Kantha District of Gujarat. It has an area of 5139 km (2009 sq. miles). Sirohi district is situated at the south-west part of Rajasthan between parallel of 24° 20′ and 25° 17′ North Latitude and 72° 16′ and 73° 10′ East Longitude. Sirohi District is broken up by hills and rocky ranges. The granite massif of Mount Abu divides the district into two portions, running from north-east to south-west. The south and south-east part of the district, which lies between Mount Abu and the main spine of the Aravallis, is mountainous and rugged, and is drained by the West Banas River. Abu Road, a station on the main Delhi-Ahmedabad rail line, lies in the valley of the West Banas. Dry deciduous forest is common in this part of the district, and the higher elevations of Mount Abu are covered in conifer forests. Abu Road is the biggest city and the main financial hub of Sirohi District. Sirohi district has the fewest villages in Rajasthan.