Settlement of 1868, it was incorporated into Croatia-Slavonia, a formally separate kingdom within the Kingdom of Hungary, which had a certain level of autonomy and was ruled by its own ban. After World War I, the area of Syrmia County became part of the newly formed Kingdom of Serbs, Croats and Slovenes in 1918 and this was confirmed by the Treaty of Saint-Germain in September 1919. The County of Syrmia was an official administrative division of the Kingdom of Serbs, Croats and Slovenes between 1918 and 1922, and then was transformed into the Province (Oblast) of Syrmia (de facto it was carried out in 1924). Demographics According to the census of 1870, the county had 120,352 inhabitants. According to the census of 1890, the county had 347,022 inhabitants. In 1900, the county had a population of 381,739 people and was composed of the following linguistic communities: Total: Serbian: 168,982 (44.3%) Croatian: 100,360 (26.3%) German: 67,027 (17.6%) Hungarian: 23,539 (6.2%) Slovak: 11,415 (3.0%) Ruthenian: 4,345 (1.1%) Romanian: 601 (0.2%) Other or unknown: 5,470 (1.4%) According to the census of 1900, the county was composed of the following religious communities: Total: Eastern Orthodox: 172,818 (45.3%) Roman Catholic: 171,142 (44.8%) Lutheran: 22,473 (5.9%) Calvinist: 5,750 (1.5%) Greek Catholic: 4,681 (1.2%) Jewish: 3,894 (1.0%) Unitarian: 2 (0.0%) Other or unknown: 979 (0.3%) In 1910, the county had a population of 414,234 people and was composed of the following linguistic communities: Total: Serbian: 183,109 (44.2%) Croatian: 106,198 (25.6%) German: 68,086 (16.4%) Hungarian: 29,522 (7.1%) Slovak: 13,841 (3.3%) Ruthenian: 4,642 (1.1%) Romanian: 587 (0.1%) Other or unknown: 8,249 (2.0%) According to the census of 1910, the county was composed of the following religious communities: Total: Eastern Orthodox: 189,007 (45.6%) Roman Catholic: 182,140 (44.0%) Lutheran: 25,927 (6.3%) Calvinist: 7,512 (1.8%) Greek Catholic: 5,722 (1.4%) Jewish: 3,779 (0.9%) Unitarian: 7 (0.0%) Other or unknown: 140 (0.0%) Subdivisions In the early 20th century, the subdivisions of Syrmia county were: The towns of Vukovar, Ilok, Vinkovci, and Županja are currently in Croatia, in Vukovar-Syrmia county. The towns of Šid, Ruma, Irig, Mitrovica (Sremska Mitrovica), Stara Pazova, Sremski Karlovci and Petrovaradin are currently in Serbia (Vojvodina province). Zemun is currently in Serbian region of Belgrade. See also Palace of Syrmia County Kingdom of Slavonia Srem District of Vojvodina, Serbia Vukovar-Syrmia County of Croatia References Literature 1924 disestablishments Former counties of Croatia Vojvodina under Habsburg rule Counties in the Kingdom of Hungary