Gopalpur Assembly constituency is one of 243 legislative assembly constituencies of the legislative assembly of Bihar.

It is a part of the Bhagalpur Lok Sabha constituency along with other assembly constituencies viz Bihpur, Pirpainti, Kahalgaon, Bhagalpur and Nathnagar.

[1] The town of Gopalpur, Bihar is part of this constituency.

Gopalpur comprises CD Blocks Gopalpur, Naugachhia, Rangrachowk & Ismailpur.

[2]