<P> A district collector, often abbreviated to collector, is an Indian Administrative Service (IAS) officer in charge of revenue collection and administration of a district in India . Since district collectors are senior-most executive magistrate in the district, the post is also referred to as the district magistrate and as the office - bearer works under the supervision of a divisional commissioner, the post is also known as deputy commissioner . </P> <P> district Administration in India is a legacy of the British Raj . District collectors were members of the Indian Civil Service and were charged with supervising general administration in the district . </P>

Who is the main officer in the department's office located at the district level
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