Rijeka is the principal seaport of Croatia, located on Kvarner Bay, an inlet of the Adriatic Sea. It has 144,043 (2001) inhabitants. The overwhelming majority of its citizens are Croats, with Serbs coming in second (6.21%). The Croatian, Slovene and Italian version of the city's name mean river in each of the languages. Rijeka is the center of Primorje-Gorski Kotar County in Croatia. The city's economy largely depends on shipbuilding and maritime transport.