The city has a population of 939,370, as per the 2009 census,[citation needed] and is located on Mombasa Island, which is separated from the mainland by two creeks: Tudor Creek and Kilindini Harbour. The island is connected to the mainland to the north by the Nyali Bridge, to the south by the Likoni Ferry and to the west by the Makupa Causeway, alongside which runs the Kenya-Uganda Railway. The port serves both Kenya and countries of the interior, linking them to the Ocean. The city is served by Moi International Airport located in the northwest mainland suburb of Chaani, northwest of Changamwe area.