The United States of America (USA) covers an area of about 9.8 million square kilometers (approximately 3.8 million square miles), making it the fourth largest country in the world by total area. It is about half the size of Russia, the largest country globally, and larger than countries like China and Canada. The US is made up of 50 states, a federal district, and several territories, with Alaska being the largest state and Rhode Island the smallest. The country's coastline is approximately 95,471 miles long, longer than the Earth's circumference. The US population is over 333 million, making it the third most populous country in the world.