A District Magistrate and Collector
, is an officer who is in-charge of a district, the basic unit of administration, in India. They are also known as District Collector
or Deputy Commissioner
in several Indian states. In general parlance, they are referred to by the abbreviation DM
. India has approximately 741 districts.Each one of them is headed by a DM. He or she is assisted by a number of officers at the headquarters as well as in the lower levels of administration like subdivisions, tehsils and blocks. These posts, often called Deputy Collectors, belong to the State Provincial Service whereas the DM is almost always a member of the Indian Administrative Service, recruited by the Union Public Service Commission.