After World War I in the Upper Silesia plebiscite 3,364 out of 4,427 voters in Kochłowice voted in favour of rejoining Poland which just regained independence, against 968 opting for staying in Germany. Afterwards it became a part of Silesian Voivodeship, Second Polish Republic. Following the joint German-Soviet invasion of Poland, which started World War II in September 1939, the village was occupied and annexed by Nazi Germany. The Germans established and operated a "Polenlager" forced labour camp for Poles in Kochłowice (see "Nazi crimes against the Polish nation"). After the war, the village was restored to Poland.