The present research paper is an attempt to analyse the level of development in Jawahar, Mokhada, Vikramgad and Vada tahsils of rural Thane district, of Maharashtra. The research is an outcome of primary and secondary data, largely government and non government publications for preparing social and economic profile of the study area. Besides this, a topographical map is used for the physiographic profile. Further, GIS based composite Index has been prepared for all the physical, demographic, social and economic variables by denoting score of 1-5. The lowest score indicates less development and the highest score indicates high development. This has enabled to analyze the regional disparity lucidly. Based on the secondary data collection at village level, the study shows that the disparity increases from the Southwest to Northeast and majority of the settlement indicate low to very low status of development. Those administrative units that suffer in socioeconomic development i.e. lack of transport connectivity, health and low literacy levels, coupled with topographical constraints have shown low scores. These tashils are industrially backward, economically underdeveloped and socially isolated and therefore majority of the settlements of these tehsils show low level development. These tehsils are tribal dominated areas. Any developmental efforts have to be specifically focused in the deprived regions that are characterized by tribal populace, highland and socio – economic isolation.