China vs United States

United States is slightly larger, by 2.5% — 9,833,517 against 9,596,960 km². China is 4.1 times more populous than United States — 1,406,585,000 against 341,784,857 people.

Side by side

Population density

China is 4.2 times more densely populated than United States — 147 against 35 people per km². Density is where area and population interact, and it often reverses the impression the headline figures give — a large country with a small population can feel emptier than a small crowded one by an enormous margin.

Practical differences

• Different currencies: the Chinese yuan and the United States dollar.
• United States spans 6 time zones, so "local time" there is not a single answer.
• Different continents — Asia and North America.

China

The largest country in the world using a single time zone, so the sun rises in the far west around three hours later by the clock than in Beijing. China has a land border with fourteen countries — more than any other state except Russia, which also has fourteen. Its terrain runs from Mount Everest on the Nepalese border to the Turpan Depression at 154 m below sea level.

United States

Third or fourth largest country in the world depending on how China's area is counted. It spans six standard time zones across the fifty states, from UTC-10 in Hawaii to UTC-5 on the east coast. Death Valley holds the highest reliably recorded air temperature on Earth, 56.7 °C in 1913, and is 86 m below sea level; Denali, 5,500 km away in Alaska, is 6,190 m.

Neutral facts only. Nothing here addresses politics, government, economics or which country is preferable in any respect — population is the one figure that dates, and it carries its year.