The following tables have been compiled on the basis of published census data. In many instances this has necessitated explanatory footnotes for the following reasons:

1. The oldest census results used in the tables are taken from the 1910 Austrian and Hungarian census based on “language” and “religion” categories. The later census results are usually based on declared “nationality.” A significant consequence of this difference is that in the Austrian and Hungarian census Jews can be found either among the German- or the Hungarian-speaking population, while in subsequent census results they are always designated a separate “nationality.” For this reason, additional information is provided in some of the footnotes regarding the Jews.