Hajdu-Bihar Coonty
Coat airms
Kintra	Hungary
Region	Northren Great Plain
Coonty seat	Debrecen
Area
? Total	6211 km 2 (2,398 sq mi)
Population
? Total	543,800
? Density	88/km 2 (230/sq mi)

Hajdu-Bihar is an admeenistrative coonty ( comitatus or megye) in eastren Hungary , on the border wi Romanie . It shares borders wi the Hungarian coonties Szabolcs-Szatmar-Bereg , Borsod-Abauj-Zemplen , Jasz-Nagykun-Szolnok an Bekes . The caipital o Hajdu-Bihar coonty is Debrecen . Thegither wi Bihor Coonty in Romanie it constitutes the Biharia Euroregion .