Its capital is Bartica, with villages including Issano, Kartabo, Kamarang, and Imbaimadai.

Before the 1980 administrative reform most of the area belonged to the Mazaruni-Potaro district.

[2] The Government of Guyana has administered three official censuses since the 1980 administrative reforms, in 1980, 1991 and 2002.

[4] Official census records for the population of the Cuyuni-Mazaruni Region are as follows: (including name variants):[5] Venezuela has renewed its claim to the Essequibo region which is situated west of the Essequibo river.

[6] The status of the border controversy is subject to the Geneva Agreement, which was signed by the United Kingdom, Venezuela and British Guiana on February 17, 1966.