Abalessa is a town and commune in Tamanrasset Province, in southern Algeria, coextensive with the district of the same name. According to the 2008 census it has a population of 9,163 up from 6,484 in 1998, with an annual growth rate of 3.6%. Abalessa is located along the ancient Trans-Saharan trade route, 80 kilometres (50 mi) west of the city of Tamanrasset, the capital of the province. The postcode of the town is 11120.