Capital city and District in Delhi, India New Delhi Capital city and District Clockwise from top left: Secretariat Building, Connaught Place, Jantar Mantar, Rashtrapati Bhavan, India Gate New Delhi Location in Delhi State Show map of Delhi New Delhi New Delhi (India) Show map of India Coordinates: 28°36′50″N 77°12′32″Eufeff / ufeff28.61389°N 77.20889°Eufeff / 28.61389; 77.20889Coordinates: 28°36′50″N 77°12′32″Eufeff / ufeff28.61389°N 77.20889°Eufeff / 28.61389; 77.20889 Country India Union territory Delhi Established 1911 Inaugurated 1931 Area [1] •xa0Capital city 42.7xa0km2 (16.5xa0sqxa0mi) Elevation 216xa0m (709xa0ft) Population (2011)[2] •xa0Capital city 257,803 •xa0Density 6,000/km2 (16,000/sqxa0mi) •xa0Metro (2016) [3] 26,454,000 Demonym(s) Dilliwale/ Delhite Time zone UTC+5:30 (IST) Pincode(s) 110xxx Area code(s) +91-11 Vehicle registration DL-1x-x-xxxx to DL-14x-x-xxxx Civic agency New Delhi Municipal Council Website www.ndmc.gov.in