Ajmer, formerly written Ajmere, is a city in Ajmer District in India's Rajasthan state. Surrounded by the Aravalli Mountains, Ajmer, also known as Ajaymeru, was the city once ruled by Prithviraj Chauhan. Its population was approximately 500,000 in 2001. The city gives its name to Ajmer district, and also to a former province of British India called Ajmer-Merwara, which, after India's independence, became the state of Ajmer. On November 1, 1956, it was merged into Rajasthan state.
Ajmer is at an important railway junction with Broad gauge lines to Jaipur and Marwar, Ahmedabad and Mumbai onwards to Banglaore and a Metre gauge line subject to conversion under Project Unigauge to Udaipur. The railway complex includes a major workshop. The railway has helped the city to connect it with major Indian cities like New Delhi, Mumbai, Kolkata, Chennai, Hydrabad, Bangalore, Ahemedabad, Indore, Bhopal, Gwalior, Jabalpur, Ujjain, Nagpur, Pune, Patna, Lucknow etc. The station is the origin for many far distance trains like Ajmer - Bhopal Express, Ajmer - Indore Link Express, Ajmer - Ratlam Express, Ajmer - Amritsar Pooja Express etc.
Ajmer is now a trade center for manufactured goods including wool textiles, hosiery, shoes, soap and pharmaceuticals . Poultry farming is a major source of income for the urban farmers. The nearby town of Kishangarh is one of the largest markets for marble and marble products. Ajmer is well connected with the national highway and is only 135 km (84 mi) from the Swai Mansingh International Airport at Jaipur which has daily flights to Delhi, Bombay, Chennai, Indore, Pune, etc.