Ghaziabad (Hindustani: [ɣaːziːaːbaːd̪]) is a city in the Indian state [4] of Uttar Pradesh and a part of Delhi NCR.

[5] It is the administrative headquarters of Ghaziabad district and is the largest city in Western Uttar Pradesh, with a population of 1,729,000.

[3] Well connected by roads and railways, it is a major rail junction for North India.

[11][12] Situated in the Upper Gangetic Plains, the city has two major divisions separated by the Hindon River, namely Trans-Hindon on the west and Cis-Hindon on the east.

[17] Establishment of the Scientific Society here, during the same period is considered as a milestone of the educational movement launched by Syed Ahmad Khan.

[24] The provisional data derived from the 2011 census shows that Ghaziabad urban agglomeration had a population of 2,358,525, of which males were 1,256,783 and females were 1,101,742.

[25] Ghaziabad is a subcategory B1 district of category B i.e. having socioeconomic parameters below the national average.

[27][28] According to the final data, Ghaziabad Municipal Corporation had a population of 1,648,643 and a sex ratio of 885 females per 1000 males.

There is a smattering of speakers of other languages due to Ghaziabad's position in the Delhi metro area.

[44] The Ghaziabad Development Authority is responsible for laying networks of sewer lines and piped drinking water supply.

[46] The corporation also announced in September 2020 that it was creating 10 'garbage factories[47]' as a permanent solution to the city's waste problem.

This development can be attributed to the influx of people from the newly formed Pakistan and the relocation of businesses from what was now the Pakistani province of Punjab.

[50] This period also saw the development of Ghaziabad as one of India's most famous centres of the Oil Engines industry.

The Red Line has 8 stations in the city, with its eastern terminus Shaheed Sthal being located here.

[57] The Delhi–Meerut RRTS is an 82.15 km (51.05 mi) semi-high speed rail connecting Delhi, Ghaziabad, and Meerut.

[58][59][60] It is partly operational, with its priority section from Sahibabad to Duhai opened to public on 20 October 2023.

The airport was inaugurated by the Prime Minister of India Narendra Modi on 8 March 2019.

Hindon Airport currently operates flights to Pithoragarh, Uttarakhand, and Hubli, Karnataka.