<P> A Deputy Conservator of Forests, an officer belonging to the Indian Forest Service is responsible for managing the Forests, environment and wild - life related issues of the district . He is assisted by the officers of the Himachal Forest Service and other Himachal Forest officials and Himachal Wild - Life officials . </P> <P> Sectoral development is looked after by the district head of each development department such as PWD, Health, Education, Agriculture, Animal husbandry, etc . These officers belong to the various State Services . </P> <Table> <Tr> <Th> S. No . </Th> <Th> District </Th> <Th> Area in km2 </Th> <Th> Population (2011) </Th> <Th> Headquarters </Th> </Tr> <Tr> <Th> </Th> <Td> Bilaspur </Td> <Td> 1,167 </Td> <Td> 3, 82,056 </Td> <Td> Bilaspur </Td> </Tr> <Tr> <Th> </Th> <Td> Chamba </Td> <Td> 6,528 </Td> <Td> 5, 15,844 </Td> <Td> Chamba </Td> </Tr> <Tr> <Th> </Th> <Td> Hamirpur </Td> <Td> 1,118 </Td> <Td> 4, 54,293 </Td> <Td> Hamirpur </Td> </Tr> <Tr> <Th> </Th> <Td> Kangra </Td> <Td> 5,739 </Td> <Td> 15, 07,223 </Td> <Td> Dharamsala </Td> </Tr> <Tr> <Th> </Th> <Td> Kinnaur </Td> <Td> 6,401 </Td> <Td> 84,298 </Td> <Td> Reckong Peo </Td> </Tr> <Tr> <Th> 6 </Th> <Td> Kullu </Td> <Td> 5,503 </Td> <Td> 4, 37,474 </Td> <Td> Kullu </Td> </Tr> <Tr> <Th> 7 </Th> <Td> Lahaul and Spiti </Td> <Td> 13,835 </Td> <Td> 31,528 </Td> <Td> Keylong </Td> </Tr> <Tr> <Th> 8 </Th> <Td> Mandi </Td> <Td> 3,950 </Td> <Td> 9, 99,518 </Td> <Td> Mandi </Td> </Tr> <Tr> <Th> 9 </Th> <Td> Shimla </Td> <Td> 5,131 </Td> <Td> 8, 13,384 </Td> <Td> Shimla </Td> </Tr> <Tr> <Th> 10 </Th> <Td> Sirmaur </Td> <Td> 2,825 </Td> <Td> 5, 30,164 </Td> <Td> Nahan </Td> </Tr> <Tr> <Th> 11 </Th> <Td> Solan </Td> <Td> 1,936 </Td> <Td> 5, 76,670 </Td> <Td> Solan </Td> </Tr> <Tr> <Th> 12 </Th> <Td> Una </Td> <Td> 1,540 </Td> <Td> 5, 21,057 </Td> <Td> Una </Td> </Tr> </Table> <Tr> <Th> S. No . </Th> <Th> District </Th> <Th> Area in km2 </Th> <Th> Population (2011) </Th> <Th> Headquarters </Th> </Tr>

Which distt of himachal pradesh is the largest in area wise
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