Kaharpur is a village located in the Bihpur block of Bhagalpur district in Bihar, India. It is situated 5 km away from sub-district headquarter Bihpur and 37 km away from district headquarter Bhagalpur.

The total geographical area of village is 878 hectares. Kaharpur has a total population of 1,404 peoples, out of which male population is 768 while female population is 636. Literacy rate of Kaharpur village is 38.46% out of which 41.67% males and 34.59% females are literate. There are about 259 houses in Kaharpur.

The primary language spoken in the village is Angika . Most of the people understand and can speak Hindi as well.

Dozens of houses have been submerged in Kosi due continuous soil erosion by waves of Kosi river. The primary school and civil hospital have also been submerged in Kosi.