The Kingdom of Serbs, Croats and Slovenes was formed in 1918 and was initially divided into counties and districts (this division was inherited from previous state administrations).

In 1922, new administrative units known as oblasts (Serbo-Croatian: oblasti / области) were introduced and the whole country was divided into 33 oblasts.

The Travnik Oblast was mostly congruent with the region of Tropolje.

According to the 1921 census, the Travnik Oblast was linguistically dominated by speakers of Serbo-Croatian.

[1] The main cities and towns located within the oblast were: All the mentioned cities and towns are now part of Bosnia and Herzegovina.