Ranishwar is a Sub-District (Tehsil/Block/Mandal) in the Dumka District of Jharkhand. As par Census 2011 information the sub-district code of Ranishwar is 02672. There are about 10 sub-districts in Dumka and Ranishwar is one of them. Dumka, Gopikandar, Jama, Jarmundi, Kathikund, Masalia, Ramgarh, Saraiyahat, Shikaripara etc. are other sub-districts in Dumka.There are about 211 villages in Ranishwar sub-district, which you can browse from villages list.