Kartal is a municipality and district of Istanbul Province, Turkey. Its area is 38 km², and its population is 483,418. It is located on the Asian side …Kartal is a municipality and district of Istanbul Province, Turkey. Its area is 38 km², and its population is 483,418. It is located on the Asian side of the city, on the coast of the Marmara Sea between Maltepe and Pendik.