At the end of 2010 at least 4.5 million people were internally displaced in Darfur, the Greater Khartoum area, South Kordofan and the ten states of Southern Sudan. It is thought that in December 2010 there were between 4.5 and 5.2 million IDPs, in the western region of Darfur (where estimates ranged between 1.9 million and 2.7 million), in and around Khartoum, in the state of South Kordofan and in Southern Sudan. In addition, there were unknown numbers of IDPs in the other northern and eastern states.