Demographics
Until 1929, Serbs, Croats and Slovenes were the constitutional nations, when they were merged into a single "Yugoslav" nationality.
The following data, grouped by first language, is from the 1921 population census:
- Serbo-Croatian: 8,911,509 (74.36%)
- Serbs: 44.57%
- Croats: 23.5%
- Muslims: 6.29%
- Slovene: 1,019,997 (8.51%)
- German: 505,790 (4.22%)
- Hungarian: 467,658 (3.9%)
- Arnaut (Albanian): 439,657 (3.67%)
- Romanian: 231,068 (1.93%)
- Turkish: 150,322 (1.25%)
- Czech and Slovak: 115,532 (0.96%)
- Ruthenian: 25,615 (0.21%)
- Russian: 20,568 (0.17%)
- Polish: 14,764 (0.12%)
- Italian: 12,553 (0.11%)
- Others: 69,878 (0.58%)
Based on language, the Yugoslavs (collectively Serbs, Croats, Slovenes and Muslims by nationality) constituted 82.87% of the country's population.
Read more about this topic: Kingdom Of Yugoslavia