Its center is the city of Slavonski Brod and it spreads along the left bank of the Sava river, hence the name Posavina.

Brod-Posavina County is further divided into 2 towns (grad, pl.

[5] Directly elected minority councils and representatives are tasked with consulting tasks for the local or regional authorities in which they are advocating for minority rights and interests, integration into public life and participation in the management of local affairs.

[6] At the 2023 Croatian national minorities councils and representatives elections Roma and Serbs of Croatia each fulfilled legal requirements to elect 25 members minority councils of the Brod-Posavina County while Albanians, Bosniaks and Ukrainians of Croatia elected individual representatives.

[7] Certain municipalities, towns or cities in the county elected their own local minority councils and representatives as well.