 It occupied an area of 42,378 km2

Bhutias, Brahmin, Chhetri, Magar, Tharu, Awadhi and "Thakuri" were the main ethnicities.They were involved in different occupations like farming, animal husbandry, tourism, and service.Ghorahi, Nepalgunj, Birendranagar were the major trade centres of Mid-Western Development Region.