New South Wales (Australia) is 2.3 times larger than Congo.
Area: 342,000 km2 World Factbook
Population: 4,662,446 (July 2014) World Factbook
The Republic of the Congo, also known as Congo or Congo-Brazzaville, is a country located in Central Africa. It is bordered by Gabon, Cameroon, the Central African Republic, the Democratic Republic of the Congo and the Angolan exclave of Cabinda. Wikipedia
New South Wales (abbreviated as NSW), is Australia's most populous state, and is located in the south-east of the country, north of Victoria, south of Queensland, east of South Australia, west of Jervis Bay Territory and encompasses the whole of the Australian Capital Territory. Wikipedia