In the 1918-1921 period, after the creation of the Kingdom of Serbs, Croats and Slovenes, the division was kept and the Belgrade Okrug was restored to its pre-1913 borders. In 1922 the new state was divided into oblasts.
Between 1918 and 1921, after the formation of the Kingdom of Serbs, Croats and Slovenes, the division remained in place, with the Belgrade Okrug being reinstated to its pre-1913 borders. In 1922, the newly formed state was divided into administrative regions.