Donetsk Oblast (, Donets'ka oblast'; also referred to as Donechchyna – Donechchyna; , Donetskaya oblast ) is an oblast (province) of eastern Ukraine. It is the most populated oblast, with around 4.5 million residents. Its administrative center is Donetsk; however, its Regional State Administration was relocated to Mariupol, a temporary measure due to the ongoing crisis in Donetsk. Historically, the region is an important part of the Donbas region. Until November 1961, it bore the name Stalino Oblast, as its capital Donetsk was named Stalino in honour of Joseph Stalin at that time.