Hajdu-Bihar Flag

Hajdú–Bihar is an administrative county in eastern Hungary, on the border with Romania. It shares borders with the Hungarian counties Szabolcs-Szatmár-Bereg, Borsod–Abaúj–Zemplén, Jász–Nagykun–Szolnok and Békés. The capital of Hajdú-Bihar county is Debrecen. Together with Bihor County in Romania it constitutes the Biharia Euroregion.
  • Area code(s): (+36) 52, 54
  • Country: Hungary
  • Region: Northern Great Plain
  • County seat: Debrecen
  • Postal code: 40xx – 422x, 4241 – 4243, 425x – 429x
  • ISO 3166 code: HU-HB
Data from: en.wikipedia.org