After the Polish victory in the Austro-Polish War of 1809, it was regained by Poles and included within the short-lived Duchy of Warsaw.

In 1870, like many other towns of northern Lesser Poland, Białaczów was reduced to the status of a village, as a punishment for residents’ patriotic support of the anti-Russian January Uprising.

In the interwar period, it was administratively located in the Opoczno County in the Kielce Voivodeship of Poland.

According to the 1921 census, Białaczów with the adjacent railway settlement and manor farm had a population of 1,671, 95.5% Polish and 4.5% Jewish.

[3] Following the joint German-Soviet invasion of Poland, which started World War II in September 1939, the town was occupied by Germany until 1945.