Ethnic and religious composition of Austria-Hungary

The ethno-linguistic composition of Austria-Hungary according to the census of 31 December 1910 was as follows:
Languages.
In the Austrian Empire (Cisleithania), 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". The Istro-Romanians were counted as Romanians.
In the Kingdom of Hungary (Transleithania), the census was based primarily on mother tongue, 48.1% of the total population spoke Hungarian as their native language. Not counting autonomous Croatia-Slavonia, more than 54.4% of the inhabitants of the Kingdom of Hungary were native speakers of Hungarian. This included also the Jews (around 5% of the population), as mostly they were Hungarian-speaking (the Yiddish speakers were recorded as German).
Transleithanian states.
Historical regions.
The Germans in Croatia were mainly living in the eastern parts of the country where they had been settled along the Drava and Danube rivers, the Military Borders (MilitarGrenze) after the ouster of the Turks in 1687.