[3][better source needed] The state was located in the Equatoria region and bordered Maridi and Amadi to the north, Jubek to the northeast, and Imatong to the east.

[7] In November of that year, the South Sudanese parliament empowered President Kiir to create new states.

[9] In November 2017, Augustino Kiri Gwolo, the Deputy Governor of Yei River State and also a colonel in the army, died of yellow fever in Juba.

Gen Morjan Abraham Wani Yoane Bondi who defected to the National Salvation Front (NAS) in 2016 after the insurgence of the civil war in South Sudan.

Other populated towns in Yei River State include Dimo (located on the border with the Democratic Republic of the Congo), Kajo Keji, and Kaya.