He was married to Katarzyna de Mathy, with whom he had two daughters: Marianna Hiż (married to Ignacy Łempicki, general of the Crown Army), Anna Hiż (married to Kacper Dąbkowski, colonel in the Sułkowski regiment), and four sons: Jan August Hiż, major general of the Crown Army and a colonel of the Crown Guard; Antoni Hiż, captain of the Lithuanian infantry guard; Józef Hiż, regent of the Crown Treasury Committee, childless; Franciszek Hiż, General adjutant of the Military Commission of the Polish-Lithuanian Commonwealth, also childless.