Kalgachia is a Sub-District (Tehsil/Block/Mandal) in the Barpeta District of Assam. As par Census 2011 information the sub-district code of Kalgachia is 02019. There are about 9 sub-districts in Barpeta and Kalgachia is one of them. Baghbor, Bajali, Barnagar, Barpeta, Chenga, Jalah, Sarthebari, Sarupeta etc. are other sub-districts in Barpeta.There are about 100 villages in Kalgachia sub-district, which you can browse from villages list.