Warsaw ; see also other names), is the capital and largest city of Poland. It is located on the Vistula River, in east-central Poland, roughly 260 kilometres from the Baltic Sea and 300 kilometres from the Carpathian Mountains. Its population is estimated at 1.711 million residents within a greater metropolitan area of 2.666 million residents, which makes Warsaw the 9th most populous capital city in the European Union. The area of the city covers 516.9 square kilometres , while the city's agglomeration covers 6,100.43 square kilometres .