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There are 7 continents: Africa, Antarctica, Asia, Australia (Oceania), Europe, North America, and South America. Together they make up all the landmass on Earth.
Asia is the largest continent, covering about 44.6 million km² — roughly 30% of the Earth's total land area.
Australia (Oceania) is the smallest continent at about 8.5 million km², though some classifications consider it the world's largest island.
Africa has the most countries with 54 recognized sovereign states. It is also the second-largest and second-most-populous continent.
Antarctica has no permanent residents. It hosts rotating research station personnel, typically 1,000–5,000 people depending on the season.