Before revision: The largest metropolitan area in Poland, if ranked solely by the number of inhabitants, is the Katowice metropolitan area with around 3 million inhabitants (5 million inhabitants in the Upper Silesian-Moravian metropolitan area).
After revision: The largest metropolitan area in Poland, if ranked solely by the number of inhabitants, is the Katowice metropolitan area with around 3 million inhabitants (5 million inhabitants in the Katowice-Ostrava metropolitan area).