After the end of the Great Turkish War, Slavonia was left desolated as around 80% of its pre-war population fled. In order to improve its demographics, people that fled from Slavonia and whose property was taken by the Ottomans were allowed to return to their lands if they had valid ownership documents. Settlers from Bosnia also started migrating to Slavonia, fleeing from the Ottomans. In 1691, around 22,300 Catholics from Bosnian
Posavina moved to Slavonia. It is estimated that around 40,000 people lived in Slavonia in 1696. In 1698, its population increased to 80,000. The 1802 Austrian population data for the Kingdom of Slavonia recorded 148,000 (51.6%)
Catholics, 135,000 (47.2%)
Orthodox and 3,500 (1.2%)
Protestants. According to other statistical estimations, in 1787 in civil Slavonia there were 265,670 inhabitants, and in 1804/1805 there were 286,349 inhabitants, but from that number clergy and nobility were excluded. Only men were counted in that census. There were: 74,671
Roman Catholics, 68,390
Orthodox Christians, 1,744
Calvinists, 97
Lutherans and 160
Jews. Number of Orthodox Christians was higher in
Syrmia: 32,090 Orthodox Christians and 12,633 Roman Catholics. In other two counties of Slavonia: Požega and Virovitica, as in city of Požega, Roman Catholics outnumbered Orthodox population. The official Austrian census of 1857 for Kingdom of Slavonia gives the following results (a section of Syrmia was in 1857 part of the
Voivodeship of Serbia and Banat of Temeschwar):
Požega County • 63,341
Roman Catholics • 41,172
Eastern Orthodox • 837
Jews • 629
Greek Catholics • 85
Calvinists • 44
Lutherans Osijek County • 101,559
Roman Catholics • 35,806
Eastern Orthodox • 4,257
Calvinists • 1,784
Jews • 629
Greek Catholics • 69
Lutherans == Economy ==