The jurisdiction of the Kolkata Municipal Corporation (governance at municipal/local level) is co-terminus with the jurisdiction of the Kolkata District ( governance at state, central level, census enumeration). The image is from the District Census Handbook for Kolkata from the Census of India 2011, WEST BENGA, SERIES-20 PART XII-B.
Directorate of Census Operations, West Bengal
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<a rel="nofollow" class="external free" href="https://censusindia.gov.in/2011census/dchb/1916_PART_B_DCHB_KOLKATA.pdf">https://censusindia.gov.in/2011census/dchb/1916_PART_B_DCHB_KOLKATA.pdf</a>