Sirmór is bounded, on the north by Bisér, from which it is divided by the river Páber; on the west by Hindūr and the Barah Tukrái, or twelve districts; on the south by the Sikh possessions; and on the east by Gerhwál, and the river Jumna. It is divided into Pergunahs, and each Pergunah into Pattis. The head of a Patti is styled a Siana, and is responsible to the Government for its revenues. Some villages are possessed by the tenure of military service. Náhen is the capital, once a flourishing town.