Bergama is a populous district, as well as the center city of the same district, in İzmir Province in western Turkey. By excluding İzmir's metropolitan area, it is one of the prominent districts of the province in terms of population and is largely urbanized at the rate of 53.6%. Bergama center is situated at a distance of 118 km (73 mi) to the north from the point of departure of the traditional center of İzmir and lies at a distance of 27 km (17 mi) inland from the nearest seacoast at the town of Dikili to its west. Bergama district area neighbors the areas of three districts of Balıkesir Province to its north, namely Ayvalık, Burhaniye and İvrindi, İzmir Province district of Kınık and Manisa Province district of Soma, Manisa to its east, while to the south it is bordered by the central provincial of Manisa and two other İzmir Province districts along the coast that are Aliağa and Dikili from its south towards its west. The district area's physical features are determined by the alluvial plain of Bakırçay River.