Promising better life attracted flux of migrants from rural areas, and nearby adjoining states such as UP, Haryana, Punjab, and Delhi. This has resulted in the large-scale expansion of the city. Many agricultural and forestry areas (full of Litchi and Basmati Rice) around the Dehradun region have changed into building apartments, universities, schools and colleges, shopping complexes, hotels, restaurants, and factories without keeping in mind harmony and ecological balance with the neighboring environment. It is also observed that green banks now gradually converted into gray area with sprawling slums. The aim of this paper is to recognize changes in built-up areas and open areas of Dehradun city using the geographical information system to analyze land use changes of the period 1998, 2008 & 2017. To achieve the objectives three digital images .The satellite image downloaded from earth explorer USGS of the year 1998, 2008 & 2017 has been taken to calculate the areas of three main categories they are built-up, vegetation & non-built-up area. The areas changes in three years gap 1998-2008, 2008-2017 and 1998-2017 have been calculated. The downloaded images converted into shape files of the study area as per Dehradun municipal map 2011 using Arc GIS10.3 and last ERDAS for classification of buildup and open areas. The socio economic impact is profoundly visible in terms of various kinds of infrastructural development and varied changes in residential areas especially in ground coverage and total built up areas, even in architectural built forms, on FAR. Open spaces and green areas, and traffic transportation main roads and link roads etc. To identify the Impact of land-use and land cover change on the residents of Dehradun the field survey was done on a restructured questionnaire among the 303 samples. The samples include the head of the families since 1998 living into Dehradun along their experience with the growth. This research predicted the socio-economic impact of urban growth ahead of the actual growth, raising realm stage of the future urban growth and expected to avoid ill effects,