Radostków-Kolonia is a settlement in the administrative district of Gmina Mykanów, within Cz stochowa County, Silesian Voivodeship, in southern Poland. It lies approximately 12 kilometres (7 mi) north of Cz stochowa and 74 km (46 mi) north of the regional capital Katowice. The settlement has a population of 423. Gmina Mykanów is a rural gmina (administrative district) in Cz stochowa County, Silesian Voivodeship, in southern Poland. Its seat is the village of Mykanów, which lies approximately 14 kilometres (9 mi) north of Cz stochowa and 76 km (47 mi) north of the regional capital Katowice.