Southern Bulgaria

Southern Bulgaria (Bulgarian: Южна България, 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.

Geographically, the terrain in Southern Bulgaria is much more varied than that of the north, with the Upper Thracian Plain stretching in the east, while the south and west are dominated by some of Bulgaria's highest mountains such as Rila, Pirin and the Rhodopes, as well as smaller and/or lower mountains and valleys in the west, such as Vitosha, Belasitsa, Osogovo, the Sofia Valley, the Sub-Balkan valleys and the Kraishte region. Southern Bulgaria covers an area of 62,414 square kilometres and has a population of 5,085,872 as of 2009^[update] (63% of Bulgaria's entire population), with a population density of 81.5 people per km². The three largest cities are the national capital Sofia, the largest city in Thrace, Plovdiv, and the major Black Sea port of Burgas.

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