Balkans
The Balkans are usually said to comprise Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Kosovo, the Republic of Macedonia, Montenegro, Romania, Serbia and Slovenia, while Greece and Turkey are often excluded. Its total area is usually given as 666,700 square km (257,400 square miles) and the population as 59,297,000 (est. 2002).
Southern Bulgaria
Southern Bulgaria (, "Yuzhna Balgariya") is the southern half of the territory of Bulgaria, located to the south of the main ridge of the Balkan Mountains which conventionally separates the country into a northern and a southern part. Besides the Balkan Mountains, Southern Bulgaria borders Serbia to the west, the Republic of Macedonia to the southwest, Greece to the south, Turkey to the southeast and the Bulgarian Black Sea Coast to the east.