Postal codes of Guyana

 Barima-Waini

 Cuyuni-Mazaruni

 Demerara-Mahaica

 East Berbice-Corentyne

 Essequibo Islands-West Demerara

 Mahaica-Berbice

 Pomeroon-Supenaam

 Potaro-Siparuni

 Upper Demerara-Berbice

 Upper Takutu-Upper Essequibo