Gliwice [ɡlʲiˈvʲit͡sɛ] ( listen) (German: Gleiwitz) is a city in Upper Silesia, southern Poland, near Katowice. Gliwice is the west district of the Upper Silesian Metropolitan Union – a metropolis with a population of 2 million. The city is located in the Silesian Highlands, on the Kłodnica river (a tributary of the Oder).Situated in the Silesian Voivodeship since its formation in 1999, Gliwice was previously in Katowice Voivodeship. Gliwice is one of the cities of a 2.7 million conurbation known as the Katowice urban area and is within the larger Silesian metropolitan area, which has a population of about 5,294,000 people. The population of the city is 185,196 (March 2014).