Montana (USA) is 3.2% larger than Norway (Overseas Territories).
Area: 365,223 km2 SSB
Population: 5,147,792 (July 2014) World Factbook
Norway, officially the Kingdom of Norway, is a Scandinavian unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, the Arctic archipelago of Svalbard, and the sub-Antarctic Bouvet Island. Wikipedia