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. The district had a population of 850,756 (2001 census), with a population density of 166 persons per km².
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.
The portion of the district west and north of Mount Abu is drier, lying in the rain shadow of the mountain, which blocks the southwest monsoon. The southwest corner of the district is drained by the Sukri river, an intermittent stream that drains the western slope of Mount Abu. The northwestern portion of the district is drained by tributaries of the Luni River. The Northwestern thorn scrub forests cover the western and northern portion of the district.
Sirohi is famous for sharp and durable swords.