Achham (अछाम जिल्ला ʌt͡sham) is a district located in Sudurpashchim province of Nepal. It is one of the nine districts of the province. The district, with Mangalsen as its district headquarters, covers an area of 1,692 km^2 and has a population (2011) of 257,477.
There are many cultural meaning about the naming of the district but one interesting folklore is that:
during Mughal era in India, most people by fear of Mughal moved to this place. That time this place was good in the production of Mangoes, so when people from North India came here, they said: "Accha Aam" (अच्छा आम) (meaning good mangoes in Hindi) and that "Accha Aam" became "Achham" later.
Achham was a part of Doti Kingdom during medieval era. Nepal annexed Doti in 1790 It remained part of Doti District until 1961. On 13 April 1961, Achham district carved out from Doti District and declared a separate district
Achham covers an area of and located at Latitude: 280°46’ North to 290°23' North and Longitude: 810°32 East to 810°35' East. 90% area of Achham is mid-hill and 10% is high-hill. The maximum elevation of the district is and minimum elevation is from the sea level. The district is surrounded by Bajura District in the North, Doti District in the West, Dailekh District in the East and Surkhet District in the South.
The district has 31 rivers in total, the main being the Karnali, Seti, Budhiganga, Ekadi, Kailash Khola, Lungreligad, Pravaligad, Kashagad, Saranigad, Ardoligad, Talagad and Barlegad.
At the time of the 2011 Nepal census, Achham District had a population of 257,477, in which female comprises 137,469 (54%) and male comprises 120,008 (46%). Density of the area is 154 people per km2.
As their first language, 66.4% of the population spoke Nepali, 32.5% Achhami, 0.4% Magar, 0.1% Doteli, 0.1% Maithili and 0.3% other languages.
Ethnicity/caste: 55.5% were Chhetri, 16.2% other Dalit, 10.2% Hill Brahmin, 9.5% Kami, 3.1% Damai/Dholi, 2.5% Thakuri, 0.6% Magar, 0.6% Sarki, 0.4% Lohar, 0.3% Badi, 0.2% Bengali, 0.2% Sanyasi/Dasnami, 0.1% Majhi, 0.