Hajdú, formerly known as Hajdúság, is the name of a historic administrative county (comitatus) of the Kingdom of Hungary in present-day eastern Hungary. The capital of the county was Debrecen. The territory of the county is now part of the Hungarian county Hajdú-Bihar.
The Hajdúság region had a special status in the Kingdom of Hungary, but was turned into the proper county Hajdú in the 19th century. After World War II, it was merged with Bihar county(the Hungarian part of pre-TrianonBihar county) and some smaller parts of the former Szabolcs county to form Hajdú-Bihar county, with its capital at Debrecen.
Subdivisions
In the early 20th century, the subdivisions of Hajdú county were: