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:
Population
Languages
In the Austrian Empire, 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 the Kingdom of Hungary, 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, as mostly they were Hungarian-speaking.
Cisleithanian states
'''Transleithanian states
Historical regions
| Transylvania | Romanian – 2,819,467 | 1,658,045 | German – 550,964 |
| Upper Hungary | Slovak – 1,688,413 | 881,320 | German – 198,405 |
| Délvidék | Serbo-Croatian – 601,770 | 425,672 | German – 324,017 Romanian – 75,318 Slovak – 56,690 |
| Transcarpathia | Ruthenian – 330,010 | 185,433 | German – 64,257 |
| Fiume | Italian – 24,212 | 6,493 | Croatian and Serbian – 13,351 Slovene - 2,336 German - 2,315 |
| Őrvidék | German – 217,072 | 26,225 | Croatian – 43,633 |
| Muravidék | Slovene – 74,199 – in 1921 | 14,065 – in 1921 | German – 2,540 – in 1921 |
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 after the ouster of the Turks in 1687.