Alamnagar (community development block) is one of the administrative divisions of Madhepura district in the Indian state of Bihar.

Almost alls caste of Hindus and Muslims live together.

Khara Budhama is also attached in Alamnagar vidhan shabha from udakishunganj.

Khara is located 12 km from Alamnagar.

[1] In the 2001 census Alamnagar Block had a population of 129,226.