Before revision: The largest metropolitan area in Poland, if ranked solely by the number of inhabitants, is the Silesian Metropolis (in fact a metroplex), with around 3 million inhabitants (5 million inhabitants in the Silesian metropolitan area), followed by Warsaw, with around 1.7 million inhabitants in the city proper and 3.1 million in the Warsaw metropolitan area.
After revision: The largest metropolitan area in Poland, if ranked solely by the number of inhabitants, is the Metropolis GZMUpper (in fact a metroplex), with around 3 million inhabitants (5 million inhabitants in the Silesian metropolitan area), followed by Warsaw, with around 1.7 million inhabitants in the city proper and 3.1 million in the Warsaw metropolitan area.