During the Kościuszko Uprising, Polish units gathered in Słomniki after the Battle of Racławice. On April 6, 1794, at Słomniki market square, Józef Zajączek and Antoni Madaliński were promoted to the rank of general. After the Partitions of Poland, Słomniki briefly belonged to the Habsburg Empire, and since 1815, it was part of Russian-controlled Congress Poland. The town was a major center of the January Uprising, for which it was stripped of its charter (1870), remaining a village until 1917. In the interwar period (1918–1939), Słomniki belonged to Kielce Voivodeship.