Surkhet District is one of Nepal's seventy-five districts of Nepal located about 600 kilometres (373 mi) west of the national capital Kathmandu. Surkhet is one of six districts in Bheri Zone which in turn belongs to the Mid-Western Development Region. The district's area is 2,451 km². It had 288,527 population in 2001 and 350,804 in 2011. Birendranagar is the district headquarters, nominated for capital of the proposed Bheri-Karnali state of the new federal republic.