Delhi covers 1483 sq km, making it the country's largest city in terms of area. According to the Census 2011, the population of the state is about 16.78 Mn, of which 97.50% live in urban areas, and the density of the population is highest among all states and union territories.

The male-female ratio is 868 for every 1000 males. The proportion of the population in the working age group 15-59 years is 60.7% and is expected to increase to 64.9% in 2036, showing robust favourable demographic trends.

To facilitate the healthcare needs of the citizens, Delhi has been constantly promoting the use of modern equipment and medicine techniques and creating a robust healthcare infrastructure. The UT has 38 multispecialty and superspecialty hospitals, 556 primary health centres, 1,658 dispensaries, and 46 polyclinics as of FY 2022-23.

Over the years, the fertility rate and underfive mortality rate have declined to 1.4 and 30 per thousand live births, respectively. To expand the network of health delivery in unserved areas, the Government of NCT has opened Seed Primary Health Centres and regulated the Delhi State Health Mission, under which various central initiatives like the National Mental Health Program and the Integrated Disease Surveillance Project are implemented.

The UT has the presence of world-class hospitals like AIIMS, Lady Hardinge Hospital, Maulana Azad Hospital, Sir Ganga Ram Hospital, and Fortis that serve as a platform for world-class health facilities, modern medical techniques, and research through Medtronic Hugo Robotic-Assisted Surgery Systems, etc. The government has also started Mohalla clinics to trickle down the medicare facilities to all sections of the UT.

The education model in Delhi employs innovative teaching strategies, and the Happiness Curriculum in schools helps children develop cognitive and collaborative skills to achieve quality learning outcomes. With a literacy rate of 86.2%, Delhi has averaged better than the national average of 73%, and the literacy gap has also been decreasing over the past years. There are 5619 recognised schools, with approximately 46 Lakh students enrolled.

Delhi boasts some of the biggest universities, like Delhi University, Delhi Technological University, IIT Delhi, FMS, etc., admitting students not just across the nation but beyond boundaries and imparting various renowned management, engineering, and technical courses. 

The Government of NCT of Delhi also established Delhi Skill & Entrepreneurship University (DSEU) to inculcate an entrepreneurial mindset and entrepreneurship among the students. 

Research institutes like the National Physical Laboratory of India and other technological and innovation cells of technical institutes like IIT Delhi, DTU, and IIT Delhi, the UT has been among the states fostering innovations and technological advancements.

The Institute of Agricultural and Research Institute (IARI) in Pusa, Delhi, developed its bio-decomposer technology for crop residue decomposition. The under-construction new Okhla Sewage Treatment Plant will be Asia's largest STP, with state-of-the-art technology and the latest BOD/TSS parameters.

A world-class technology park is also being planned, spanning over 147 acres of land in Mundka. Moreover, Sir Ganga Ram Hospital achieved a surgical milestone by performing the first successful bilateral hand transplant in Delhi. These illustrate the UT's commitment to continual upgradation towards dynamic technological advancements. 

Serving as one of the key destinations for trade, tourism, and other areas, Delhi's location provides it with a strategic advantage with well-connected railways, road networks, and airports.

With the largest metro rail network, Delhi Metro has become a convenient means of mobility for lakhs of people in and around Delhi. The UT has two airports: Indira Gandhi International Airport, which connects the capital city to major cities worldwide, and Safdarjung Airport.

Delhi has 5 major railway stations that handle 496 passenger trains and 210 freight trains every day. In addition, it has ~18,600 km of road length, connecting it to various parts of Delhi through motor vehicles and DTC, which is the largest public transport entity in the NCR.

Five major national highways converge in Delhi. The development of the Delhi-Mumbai Expressway, passing through six states, serves as one of the major routes for logistical and industrial purposes. 

Ranking top among the UTs in NITI Aayog's SDG India Index 3.0 report, the UT has consistently worked to supply inclusive, sustainable, and equitable services, in line with the UN Sustainable Goals under SDG-6 and SDG-7. Delhi has already achieved the goal of 100% electrification.

Total installed capacity of Renewable Power as of February 2025 is 397.40 MW. The Government of NCT of Delhi has made a provision for solar installation in all buildings with plot areas of 105 meters or greater mandatory. To enhance the wider adoption of solar systems, the new Solar Policy 2023 has also been approved, wherein a Generation-Based Incentive (GBI) has been proposed for residential, commercial, and institutional sectors. With more than one lakh electric vehicles, Delhi has been steadfast in the adoption of EVs.