Chainpur is a municipality in Sankhuwasabha District in the Koshi Province of north-eastern Nepal.

It was formed by merging five villages i.e. Chainpur, Siddhakali, Siddhapokhari, Baneshwar and Kharang.

It has been famous for hundreds of years for the Karuwa, a special kind of water mug with a pipe tap sculptured with artistic carving on exterior of it.

Of these, 48.4% spoke Nepali, 13.6% Tamang, 10.4% Sherpa, 9.6% Limbu, 3.3% Yakkha, 2.8% Newar, 2.0% Chamling, 1.8% Magar, 1.7% Khaling, 1.6% Rai, 1.4% Thulung, 0.9% Kulung, 0.8% Gurung, 0.4% Jerung, 0.2% Dumi, 0.2% Maithili, 0.1% Bantawa, 0.1% Nachhiring, 0.1% Puma, 0.1% Rajasthani and 0.3% other languages as their first language.

[4] In terms of ethnicity/caste, 24.7% were Chhetri, 15.1% Tamang, 10.5% Sherpa, 10.2% Limbu, 7.8% Rai, 6.1% Hill Brahmin, 6.1% Newar, 4.0% Kami, 3.7% Yakkha, 2.3% Magar, 2.0% Damai/Dholi, 2.0% Sarki, 1.0% Gurung, 0.8% Chamling, 0.8% Thulung, 0.7% Khaling, 0.6% Kulung, 0.3% Gharti/Bhujel, 0.3% Sanyasi/Dasnami, 0.1% Bantawa, 0.1% other Dalit, 0.1% Dhandi, 0.1% Majhi, 0.1% Marwadi, 0.1% Tharu, 0.1% Yadav and 0.5% others.