Navi Mumbai (Marathi: , IAST: Navi Muba) is a Planned Satellite City on the west coast of the Indian state of Maharashtra. It was developed in 1972 as a twin city of Mumbai, and is the largest planned city on the planet, with 163 square kilometres (63 sq mi) under the jurisdiction of the Navi Mumbai Municipal Corporation (NMMC) and a total area of 344 square kilometres (133 sq mi).
Navi Mumbai lies on the mainland on the eastern shore of Thane Creek. The city limits stretch from Airoli near Thane in the north, to Uran in the south. The length of the city is almost the same as that of Mumbai. The Vashi and the Airoli Bridges connect Navi Mumbai to Mumbai. A new link between Nerul and Uran is under construction. The costliest real estate and most highly developed areas of Navi Mumbai are Vashi and Nerul, while Kharghar and Panvel are experiencing major infrastructural developments due to their proximity to the proposed Navi Mumbai International Airport. Vashi is known as the king of Navi Mumbai while Nerul is called the queen of Navi Mumbai. Navi Mumbai has a population of 2,600,000 of which approximately 800,000 live in Nerul and about 700,000 in Vashi, with the remainder residing in Belapur, Kharghar, Sanpada, Airoli, Ghansoli, Kopar Khairane and surrounding areas.