The cross-border area is located in South–Eastern Europe, at the Balkan Peninsula and includes districts: Burgas, Yambol and Haskovo in Republic of Bulgaria and the provinces Edirne and Kırklareli in the Republic of Turkey. The territory has an extent of about 29.000 km² and the common border of both countries stretches along 288 km (including three operating border crossings) and has a total population of 1,5 Million inhabitants (784.480 inhabitants on the Bulgarian area and 742.000 inhabitants on the Turkish area. The area in Bulgaria represents 14.99 % of the total territory of the country respectively the area in Turkey represents 1.58 % of total country territory. Main cities of the region are Burgas (211.535 inhabitants), Yambol (72.778) and Haskovo (92.788) in Bulgaria and Edirne (148.474) and Kırklareli (61.880) in Turkey. Generally, the CBC region shows a very low population density of 54,9 inhabitants/km² in Burgas, 45,3 inhabitants/km² in Haskovo and 39,7 inhabitants/km² in Yambol. Edirne has a population density of 64,7 inhabitants/km², Kırklareli of 53 inhabitants/km².
The geographical structure of the area alternates from altitude 710 m to 1000 m and includes plains, low altitude valleys, plateaus and hilly areas, with some mountain features. In the North-West the area borders to the Eastern Rhodopi Mountains and to the low branches of the Sakar Mountain in Bulgaria, and on the South-west to the Aegean Sea (Saros Gulf) in Turkey. In the North-East the co-operation area borders to the Balkan Range in Bulgaria, and in the South-East to Strandja/Yildiz Mountain and Black Sea littoral presented both in Bulgaria and in Turkey. The water reserves of the area comprise both surface and ground waters. Maritsa/Meric River is the biggest river on the Balkan Peninsula. Tundja/Tunca River is another important one in the region. The region of Strandja/Yildiz Mountain is the richest on water resources in the entire Thracian – Strandja/Yildiz area. Five rivers take their sources from the Strandja/Yildiz Mountain. The largest of them are Ropotamo, Dyavolska and Veleka/Değirmendere.
Burgas, Yambol and Haskovo in Republic of Bulgaria …
Provinces Edirne and Kırklareli in the Republic of Turkey …