Presently, the Union Territory of Andaman and Nicobar Islands comprises 3 districts:
| Code[1] | District | Headquarters | Population (2011) area in square kilometres, and the population density per square kilometre. | Area (km2) | Density (/km2)[2] |
| NI | Nicobar | Car Nicobar | 36,819 | 1,841 | 20 |
| NA | North and Middle Andaman | Mayabunder | 105,539 | 3,227 | 32 |
| SA | South Andaman | Port Blair | 237,586 | 3,181 | 80 |
History
On 1 August 1974 Nicobar district was separated from Andaman district. On 18 August 2006, Andaman district was bifurcated into two districts: North and Middle Andaman district and South Andaman district.