Gaafu Alif Atoll (Ga.) is located between latitude 0° 55' N and 0° 28' N. Situated south of the One and a Half Degree Channel, Gaaf Alif Atoll Atolll has 10 inhabited islands and a number of uninhabited islands.. Viligili, the atoll capital (pop 2850) is located on the north eastern side.
Huvadu Atoll which forms both Gaaf Alif and Gaaf Dhaalu (GDh.) administrative units is the largest coral atoll in Maldives. Apart from Viligili, there are 4 islands with populations over 1000. Diyadhoo has a population of less than 250.