Stockholm County is a county or län (in Swedish) on the Baltic sea coast of Sweden. It borders Uppsala County and Södermanland County. It also borders Mälaren and the Baltic Sea. The city of Stockholm is the capital of Sweden. Stockholm County is divided by the historic provinces of Uppland (Roslagen) and Södermanland (Södertörn). More than one fifth of the Swedish population lives in the county. Stockholm County is also one of the statistical riksområden (national areas) according to NUTS:SE, Nomenclature of Territorial Units for Statistics within the EU. Stockholm County is, with its more than two million inhabitants, the most densely populated of the 21 administrative counties of Sweden.