Istria County (/ˈɪstriə/; Croatian: Istarska županija; Italian: Regione istriana, lit. "Istrian Region") is the westernmost county of Croatia which includes the majority of the Istrian peninsula.
Administrative centers in the county are Pazin, Pula (Pola) and Poreč(Parenzo). Istria County has the largest Italian-speaking population in Croatia. It borders Slovenia on the north.
Istrian Italians (Italian: istriani italiani; Slovene: Italijanski Istrani; Croatian: Talijanski Istrani) are an ethnic group from the Adriatic region of Istria in modern northwestern Croatia and southwestern Slovenia. Istrian Italians descend from the original Latinized population of Roman Histria, from the Venetian-speaking settlers who colonized the region during the time of the Republic of Venice, from the local Croatian people who culturally assimilated, and from colonization between the two world wars.
While nationalization processes were still underway, in 19th century Istria the west side of the peninsula had a majority of Italian language and Romance verniculars speakers, while Croatian language was spoken by the majority in the central and eastern regions and on the islands, and Slovene in the north. Italian language was the official language in the territories of the former Venetian Republic, which encouraged many Istrians to identify as Italians, in spite of their mother tongue and ethnic origins. Italian speaking population made up about a third of the population in 1900, and 36% in 1910. The Italian population growth was followed by a stark decline during the Istrian–Dalmatian exodus (1943–1960), with estimates of those who left ranging from 163,000, to 230,000 and 350,000. A significant Italian minority still lives in the Croatian County of Istria (5.01%) and in Slovenian Istria (3.3%), where they are granted minority rights. According to the official Slovenian and Croatian censuses conducted in 2001 and 2002 respectively, they number around 22,000.