Birpur is a city and a notified area in Supaul district in the state of Bihar, India.

It had been made when first prime minister of India Jawaharlal Nehru had landed here to lay the foundation stone of Koshi Barrage.

There is also a government college named Lalit Naryan Mishra Smarak Mahavidyalay on the name of Lalit Narayan Mishra, who was railway minister of India from 1973 to 1975 and who died in 1975 in a bomb blast at Samastipur.

Neighbouring areas are Basantpur, Bhimnagar, Kataiya Power House, which is a hydro power plant, { 𝘼𝙖𝙯𝙖𝙙 𝘾𝙡𝙪𝙗 𝙃𝙚𝙧𝙤 𝘾𝙝𝙤𝙬𝙠 } Hriday Nagar, Bhavanipur, Sitapur Nearest railway head from Birpur is Raghopur in the south and Forbesganj and Jogbani in the east.

One can easily reach Jogbani via auto or buses which are available at Gol Chowk and bus stand.

Direct bus services are available towards Sharsha, Purnea, Delhi, Patna & Darbhanga.

In Birpur Nagar Panchayat, Female Sex Ratio is of 864 against state average of 918.

Moreover Child Sex Ratio in Birpur is around 973 compared to Bihar state average of 935.

Local people had started a movement in 2015 to convert it into a sub- divisional hospital for better facilities and in early 2016 got success.