In 1526, at the Battle of Mohács, the Hungarian army was defeated. This opened the way for the Turks to the interior of Hungary, which was the cause of the eviction of the Croatian and Serbian populations. When the Turks conquered Kostajnica Castle, located on the river Une, which was the border fortress between Bosnia and Croatia, in 1557, the Serbian and Croatian nobility, and with it the population, left the occupied territories. As mentioned in the Račišdorf Commemorative Book, the Jesuit historian Ján Segedy wrote this: "Many settlers moved from Slavonia to Hungary - some due to hunger, others out of fear of the Turk ... Some found refuge in Bratislava." most emigrants came from Croatia. Over time, Croatian families merged with the original population, thus strengthening the Slavic part of the population. Until now, Croatian names with the suffix "ič", such as Benčič, Bednarič, Ďurďovič, Halinkovič, Husarovič, Polakovič, etc., predominate among the original inhabitants of Rača.
Count Siegfried Kolonich (Kolonič), a lord of Račišdorf, a knight of the Golden Promontory, an evangelical magnate, whom King Maximilian I (1564 - 1576) endowed with high offices and power and elected him as his adviser, also had Croatian origin.
In the second half of the 16th century, Rača received several privileges and was promoted to a town.
In 1606, Rača became the property of Ján Keglevič, who came from an old Croatian family, and his wife Zuzana Bayová, daughter of Michal Bay.