Pop. (1905) about 25,000, consisting of Turks, Slavs and Greeks.
Of the Aryan races the Slavs - Serbs, Bulgarians, Pomaks and Cossacks - and the Greeks predominate, the other representatives being chiefly Albanians and Kurds.
Ethnographically, the Bavarians belong to various ancient tribes; Germanized Slavs in the north-east, Swabians and Franks in the centre, Franks towards the west, and, in the Palatinate, Walloons.
For a century and a half a succession of dukes resisted the inroads of the Slavs on their eastern frontier, and by the time of Duke Theodo I., who died in 717, were completely independent of the feeble Frankish kings.