The ethno-linguistic composition of Austria-Hungary according to the census of 31 December 1910 was as follows:
Ethnic and religious composition of Austria-Hungary Wikipedia
The census of 1911 recorded Umgangssprache, everyday language. Jews and those using German in offices often stated German as their Umgangssprache, even when having a different Muttersprache. In "Hungary proper", 5% of the population were Jews, who were included in speakers of the Hungarian language.