Ajmer is the 5th largest city in Rajasthan and is the centre of the eponymous Ajmer District. Ajmer has a population of around 551,360 in its urban agglomeration and 542,580 for the city (2011 census), and is located 135 kilometres (84 mi) west of Jaipur, the state capital, 274 km from Udaipur, 439 km from Jaisalmer, and 391 km from Delhi.

Ajmer is surrounded by the Aravalli Mountains. It is a pilgrimage centre for the shrine of the Sufi Saint Khwaja Moinuddin Chishti and is also the base for visiting Pushkar (11 km), an ancient Hindu pilgrimage city, famous for the temple of Brahma.