FSI is headed by a Director General supported by two Joint Directors and eight Deputy Directors at headquarters. Each Zonal office is headed by a Regional Director and supported by one or two Deputy Directors. The Joint Directors at the headquarters head two units namely National Forest Data Management Centre (NFDMC) and Training & Forest Inventory (TFI). NFDMC conducts assessment of forest cover, thematic mapping, production of maps, etc. TFI unit is concerned with inventory of tree resources inside and outside the forests, conducting of training courses, extension works, publication of reports, maintenance of library, etc. The total sanctioned strength ofthe organisation is 436, which includes members of the Indian Forest Service and Indian Statistical Service on deputation.