Styria (Slovene: Štajerska [ˈʃtáːjɛɾska]), also known as Slovenian Styria (Slovene: Slovenska Štajerska; Austrian German: Slowenische Steiermark) or Lower Styria (Slovene: Spodnja Štajerska; Austrian German: Untersteiermark) to differentiate it from Austrian Styria, is a traditional region in northeastern Slovenia, comprising the southern third of the former Duchy of Styria. The population of Styria in its historical boundaries amounts to around 705,000 inhabitants, or 34.5% of the population of Slovenia. Its largest city and urban center is Maribor, with other urban centers including Celje, Velenje, Ptuj and Trbovlje.