Slavs
Standardised Slavic languages that have official status in at least one country are: Belarusian, Bosnian, Bulgarian, Croatian, Czech, Macedonian, Montenegrin, Polish, Russian, Serbian, Slovak, Slovene, and Ukrainian.
Demographics of Croatia
The Croatian language is the official language of Croatia, and one of 24 official languages of the European Union since 2013. Minority languages are in official use in local government units where more than a third of the population consists of national minorities or where local legislation mandates their use. These languages are Czech, Hungarian, Italian, Ruthenian, Serbian and Slovak. According to the 2011 Census, 95.60% of citizens of Croatia declared Croatian as their native language, 1.23% declared Serbian as their native language, while no other language is represented in Croatia by more than 0.5% of native speakers among the population of Croatia.