Rural urban-migration is an integral part of development. Accordingly with rapid socio-economic development, Bhutan is also experiencing rapid urban expansion, mainly due to rural-urban migration. As rural out-migration is rampantly increasing in Bhutan it is important and worthwhile to examine the rural-outmigration scenario at the micro-level. A micro-level survey was conducted in Khaling gewog in December 2011 and data was collected from 210 households in the gewog. Generally out-migration in Khaling gewog was found to be very high with almost 50 % of its registered population absent from the household for more than a year during the time of survey. It was also found that huge chunk of out-migrants constitutes of working age population (15-64) and more than 70 % had at least primary and above education. Most prominent reasons for leaving home were found to be socio-economic reasons such as family move, employment, education and marriage. The flow of migration was found to be maximum towards urban hubs in Bhutan like Thimphu, Phuentsholing and Samdrup Jongkhar