Delhi
One of the most persistent stories about Delhi begins with a king named Dhillu. He supposedly built a city at this location in 50 BCE and named it after himself. Another legend suggests the name comes from a Prakrit word meaning loose, referring to an iron pillar that had a weak foundation and required moving. The Archaeological Survey of India director Alexander Cunningham noted that the original name might have been Dhilli or Dhillika before evolving into its current form. Some historians believe the term derives from Hindustani words dehleez or dehali, both translating to threshold or gateway. This symbolism reflects the city's historical role as a gateway to the Gangetic Plain. Coins circulating under the Tomara dynasty were called dehliwal, further cementing the linguistic connection. The spelling Delhi with an h following the l originated during colonial rule as an alternation of the Urdu name Dehli. Idioms like Delhi is still far away describe tasks or journeys that remain incomplete. Another saying, It pours all around while Delhi lies parched, highlights the semi-arid climate and situations of deprivation surrounded by plenty.
The Qutb Minar stands as a UNESCO World Heritage Site completed during the reign of Sultan Iltutmish between 1211 and 1236. Its height reaches approximately 72 meters and serves as one of the earliest extant mosques in India alongside the Quwwat-al-Islam mosque. Prithviraj Chauhan lost the second battle of Tarain in 1192 to Muhammad Ghori, marking the beginning of Muslim rule. Qutb-ud-din Aibak assumed control after Ghori died without an heir in 1206 CE and laid the foundation for the Delhi Sultanate. Razia became the Sultana of Delhi upon her father's death, ruling until 1240. The Mughal Empire ruled from Delhi and Agra for over three centuries with a sixteen-year hiatus between 1540 and 1556. Shah Jahan constructed Shahjahanabad in 1638 which served as the capital until the British took control. Babur invaded India in 1526 defeating the last Lodhi sultan at Panipat and founding the Mughal dynasty. Nader Shah sacked Delhi in 1739 carrying away immense wealth including the Peacock Throne and Koh-i-Noor diamond. Timur massacred 100,000 captive civilians when he captured the city in 1398.
British East India Company forces defeated Maratha forces in the Battle of Delhi during the Second Anglo-Maratha War in 1803. The city came under direct British Government control in 1858 following the Indian Rebellion of 1857. In 1911 it was announced that the capital would transfer from Calcutta to Delhi. This formal transfer occurred on the 12th of December 1911. New Delhi received its name in 1927 and was inaugurated on the 13th of February 1931. The new capital officially became the capital of independent India after gaining independence on the 15th of August 1947. The States Reorganisation Act of 1956 created the Union Territory of Delhi from its predecessor Chief Commissioner's Province. The Constitution Sixty-ninth Amendment Act of 1991 declared the territory formally known as the National Capital Territory of Delhi. The legislative assembly was abolished in 1956 before being re-established in 1993 with limited powers. Today New Delhi houses the Parliament of India Rashtrapati Bhavan Cabinet Secretariat and Supreme Court within a single municipal district.
During the partition of India around five hundred thousand Hindu and Sikh refugees migrated to Delhi from West Punjab. Approximately three hundred thousand Muslim residents left for Pakistan during this same period. Khan Market in New Delhi was established in 1951 specifically to help refugees especially those from the North West Frontier Province. It honors Khan Abdul Jabbar Khan who served as chief minister of NWFP during Partition. The small part of Delhi constructed during the British period has come to be informally known as Lutyens' Delhi. The city lost two-thirds of its Muslim residents partly due to pressure from arriving Hindu and Sikh refugees from western Punjab. Refugees were found living in Gujarat Rajasthan Hyderabad and Maharashtra losing their homes and livelihoods. This demographic shift transformed Delhi from a Mughal city into what many describe as a Punjabi one. The population increased by 285,000 through migration alone in 2001 making it one of the fastest-growing cities globally.
The National Capital Territory of Delhi currently comprises one division eleven districts thirty-three subdivisions fifty-nine census towns and three hundred villages. Shelly Oberoi serves as the current mayor of the unified Municipal Corporation of Delhi since 2023. The legislative assembly consists of seventy constituencies with seven Lok Sabha seats representing the area. The Indian National Congress formed all governments until the 1990s when Madan Lal Khurana led the Bharatiya Janata Party to power. Sheila Dikshit returned Congress to power in 1998 serving three consecutive terms before being ousted in 2013. Arvind Kejriwal's Aam Aadmi Party won sixty-seven out of seventy seats in February 2015 after a landslide victory. That government collapsed after only forty-nine days leading to President's rule until February 2015. Following assembly elections in 2025 the BJP came back to power. The High Court of Delhi sits alongside various district courts including Tis Hazari Karkardooma Patiala House Rohini Dwarka Saket and Rouse Avenue complexes. Police operations divide the city into fifteen districts further subdivided into ninety-five local police station zones.
Recent estimates place Delhi's economy between $370 billion and $400 billion PPP metro GDP making it either India's most or second-most productive metro area. The nominal GSDP for 2016-17 was estimated at ₹13 trillion representing thirteen percent growth over the previous year. Oxford Economics Global Cities index ranked Delhi as best city in India and one hundred eighteenth globally in economics category in 2024. Information technology telecommunications hotels banking media and tourism form key service industries driving economic activity. Construction power health community services real estate manufacturing retail and foreign investment contribute significantly to urban expansion. In 2018 total workforce in national state governments quasi-government sector reached five hundred ninety-four thousand while private sector employed two hundred seventy-three thousand. Manufacturing employed one million four hundred forty thousand workers with one hundred twenty-nine thousand industrial units operating in 2001. Delhi has one of India's largest fastest growing retail industries attracting consumer goods companies establishing headquarters locally. The population density reached eleven thousand two hundred ninety-seven persons per square kilometer according to 2011 census data.
Delhi ranked as the world's most polluted city in 2014 according to World Health Organization data before dropping to eleventh worst by 2016. By 2022 WHO and IQAir ranked it fourth most-polluted city globally again. Air pollution causes approximately ten thousand five hundred deaths annually within the region. Fine particulate matter PM2.5 levels reached one hundred fifty-three micrograms per cubic meter making it the highest recorded anywhere. Annual average PM2.5 stood at one hundred seven point six micrograms per cubic meter in 2020 nearly twenty-one times WHO guidelines set in September 2021. These pollution levels reduce life expectancy by almost ten years for an average resident. Stubble burning firecracker-burning during Diwali cold weather vehicular emissions construction work crop burning all contribute to deteriorating air quality. Peak PM levels increased forty-four percent between 2013-14 primarily due to high vehicular industrial emissions and agricultural waste burning. Delhi Transport Corporation operates the world's largest fleet of compressed natural gas buses since a Supreme Court ruling in 1998. The Delhi Metro has significantly reduced pollutants though stubble burning in Punjab Haryana Uttar Pradesh intensifies smog over the capital.
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Common questions
What is the origin of the name Delhi according to historical legends?
One persistent story attributes the city's founding to a king named Dhillu who built it in 50 BCE and named it after himself. Another legend suggests the name derives from a Prakrit word meaning loose referring to an iron pillar with a weak foundation that required moving.
When was the Qutb Minar completed and what are its dimensions?
The Qutb Minar stands as a UNESCO World Heritage Site completed during the reign of Sultan Iltutmish between 1211 and 1236. Its height reaches approximately 72 meters and serves as one of the earliest extant mosques in India alongside the Quwwat-al-Islam mosque.
How did the capital status of New Delhi change from Calcutta to independent India?
In 1911 it was announced that the capital would transfer from Calcutta to Delhi and this formal transfer occurred on the 12th of December 1911. The new capital officially became the capital of independent India after gaining independence on the 15th of August 1947.
What demographic shifts occurred in Delhi during the partition of India around 1947?
During the partition of India around five hundred thousand Hindu and Sikh refugees migrated to Delhi from West Punjab while approximately three hundred thousand Muslim residents left for Pakistan. This demographic shift transformed Delhi from a Mughal city into what many describe as a Punjabi one with the population increasing by 285,000 through migration alone in 2001.
Who is the current mayor of the Municipal Corporation of Delhi and when did they take office?
Shelly Oberoi serves as the current mayor of the unified Municipal Corporation of Delhi since 2023. The legislative assembly consists of seventy constituencies with seven Lok Sabha seats representing the area.
How does air pollution affect life expectancy and health in Delhi according to recent data?
Air pollution causes approximately ten thousand five hundred deaths annually within the region and reduces life expectancy by almost ten years for an average resident. Fine particulate matter PM2.5 levels reached one hundred fifty-three micrograms per cubic meter making it the highest recorded anywhere.