Split-Dalmatia (Croatian: Splitsko-dalmatinska županija) is the central-southern Dalmatian county in Croatia. Its center is Split. Population of the county is 463,676. Land area is 4534 km². Physically, county is divided into three main parts: elevated hinterland (Dalmatinska zagora) with numerous karst fields; narrow coastal strip with high population density; and the islands. Parts of the Dinaric Alps, including Dinara itself form the border with Bosnia and Herzegovina while Kozjak, Mosor and Biokovo mountains separate the coastal strip from the hinterland.