Dialects of Serbo-Croatian
Kajkavian is spoken in North Croatia, including the capital Zagreb, as well as in a few enclaves in Austria, Hungary, and Romania. Though its speakers are ethnic Croats and Kajkavian is thus generally considered a dialect of Serbo-Croatian, it is closer to neighboring Slovene than it is to Chakavian or Shtokavian. The Kajkavian area of Croatia is bordered on the northwest by Slovene language territory. It is bordered on the east and southeast by Shtokavian dialects roughly along a line that was the former division between Civil Croatia and the Habsburg Military Frontier; in southwest along Kupa and Dobra rivers, it persisted in ancient (medieval) contact with Chakavian dialects.
Serbo-Croatian
Croatian is spoken by roughly 4.8 million, including some 575,000 in Bosnia and Herzegovina. A small Croatian minority that lives in Italy, known as Molise Croats, have somewhat preserved traces of the Croatian language. In Croatia, 170,000, mostly Italians and Hungarians, use it as a second language.