NCR

National Capital Region is a metropolitan area, which icnludes New Delhi, Delhi, Delhi Cantonment along with satellite towns which came into existence all along borders of Delhi viz NOIDA, Faridabad, Gurgaon, Greater NOIDA, Ghaziabad.

The motive of developing a region called NCR was to create settlements for increasing influx of people coming to Delhi. Since Delhi was already having no space for extension, so GOI thought of developing satellite towns on the borders of Delhi, which lied in other states. The genesis of the National Capital Region lies in the recommendations of the first Master Plan for Delhi (MPD) notified in 1962 wherein, a broad area consisting of the Union Territory of Delhi and a few ring towns around it was conceived for being developed as a metropolitan region to reduce the population pressure on Delhi.

The area of the NCR is as follows:
NCT Delhi: 1,482 square kilometers

Haryana
Seven districts - Gurgaon, Rewari, Faridabad, Sonepat, Rohtak, Panipat and Jhajjhar, comprising 13,413 square kilometers

Uttar Pradesh
Four districts - Ghaziabad, Bulandshahr, Meerut and Baghpat, comprising 10,853 square kilometers

Rajasthan
Alwar district, 7,829 square kilometers