Hungarian is a member of the Ugric languages, a sub-group of the Finno-Ugric language family, which in turn is a branch of the Uralic languages. Connections between the Ugric and Finnic languages were noticed in the 1670s and established, along with the entire Uralic family, in 1717, although the classification of Hungarian continued to be a matter of political controversy into the 18th and even 19th centuries. Today the Uralic family is considered one of the best demonstrated large language families, along with Indo-European and Austronesian.
Hungarian is the official language of Hungary, and thus an official language of the European Union. Hungarian is also one of the official languages of Vojvodina and an official language of three municipalities in Slovenia (Hodoš/Hodos, Dobrovnik/Dobrónak and Lendava/Lendva), along with Slovene. Hungarian is officially recognized as a minority or regional language in Austria, Croatia and Slovakia. In Romania, it is an official language at local level in all communes, towns and municipalities with an ethnic-Hungarian population of over 20%.
The dialects of Hungarian identified by Ethnologue are: Alföld, West Danube, Danube-Tisza, King's Pass Hungarian, Northeast Hungarian, Northwest Hungarian, Székely and West Hungarian. These dialects are, for the most part, mutually intelligible. The Hungarian Csángó dialect, which is not listed by Ethnologue, is spoken mostly in Bacau County, Romania. The Csángó minority group has been largely isolated from other Hungarians, and they therefore preserved a dialect closely resembling medieval Hungarian.