Official nameAl-Mamlaka al-Arabiya as-Saudiy (Kingdom of Saudi Arabia)CapitalRiyadhPopulation estimate (2015)31·54 millionInternet domain extension.saCurrencyThe unit of currency is the rial (SAR), which consists of 100 halalah.TerritorySaudi Arabia, which occupies nearly 80% of the Arabian peninsula, is bounded in the west by the Red Sea, east by the Persian Gulf, Qatar and the United Arab Emirates, north by Jordan, Iraq and Kuwait and south by Yemen and Oman.LanguageThe official language is Arabic.Source: The Statesman's Yearbook 2018. Palgrave Macmillan, London Synonyms and related words