Arta's 2026 population is now estimated at 11,222. In 2009, the population of Arta was 13,260. Arta experienced a decrease of -120 residents over the past year, marking an annual decline of -1.06%. These population values and projections come from Djibouti census 2009 localities (via CityPopulation, cited Ministry of Finance), Djibouti census 2024 localities (via CityPopulation, cited INSTAD) and World Population Review Internal Projections .