Sidhwalia is a Sub-District (Tehsil/Block/Mandal) in the Gopalganj District of Bihar. As par Census 2011 information the sub-district code of Sidhwalia is 01227. There are about 14 sub-districts in Gopalganj and Sidhwalia is one of them. Baikunthpur, Barauli, Bhorey, Bijaipur, Gopalganj, Hathua, Katiya, Kuchaikote, Manjha, Pach Deuri, Phulwaria, Thawe, Uchkagaon etc. are other sub-districts in Gopalganj.There are about 48 villages in Sidhwalia sub-district, which you can browse from villages list.