America is a country that loves superlatives, and for once the superlatives are earned. The United States is the third largest country in the world by area, home to the tallest mountain in North America, the lowest point in the continent, the only royal palace on American soil, and a mountain that is technically taller than Mount Everest. Here are the facts about the USA that surprise even Americans, and the numbers behind them.
How big is America, really?
The United States covers more than 3,800,000 square miles, making it the third largest country in the world by area. It is a federation of 50 states plus a federal district and various territories, and those states vary in size to an almost absurd degree.
Alaska is by far the biggest. At 665,384 square miles, it is more than double the size of the second largest state, Texas, and more than 400 times the size of the smallest, Rhode Island. In fact, Alaska is bigger than Texas, California, and Montana combined. The entire United States is only about five times as big as Alaska alone.
At the other end of the scale sits Rhode Island, covering roughly 1,545 square miles by one common measure, or about 1,214 square miles of land area depending on how water is counted. Either way, it is tiny: you could fit Rhode Island inside Alaska hundreds of times over, and the whole state is smaller than many single counties out west. San Bernardino County in California, the largest county in the contiguous United States, is larger than each of the nine smallest states.
The highest, the lowest, and the longest
The highest point in the United States is Denali in Alaska, at 20,308 feet above sea level. The lowest point is Death Valley in California, at 282 feet below sea level. The distance between the roof of the country and its floor is a journey from Arctic Alaska to one of the hottest deserts on Earth.
Alaska also holds another record: the longest coastline of any state, at 6,640 miles. That is a coastline longer than the drive from New York to Los Angeles and back, and it helps explain why Alaska feels less like a state and more like a separate world.
Then there is the mountain that beats Everest. Mauna Kea in Hawaii rises only 13,796 feet above sea level, which sounds modest. But measured from its base on the seafloor, it stands more than 32,000 feet tall, making it taller than Mount Everest, which reaches 29,028 feet above sea level. Everest is still the tallest mountain above sea level. Mauna Kea is simply taller if you count the part that is underwater.
A country with no official language
Here is a fact that surprises many visitors: the United States has no official language. English is the most commonly spoken language and the language of government, but no law at the federal level has ever made it official.
That openness is part of a deeper pattern. The country’s major mountain ranges run north to south, which has a large impact on regional climates: the West Coast enjoys a milder climate moderated by the ocean, while places like Arizona and Nevada are hot and dry because they sit on the leeward side of mountain ranges. Geography, not legislation, has shaped much of American life.
Ancient trees and a royal palace
Some of the oldest living things on Earth grow in the western United States. Bristlecone pine trees, found in California, Utah, Nevada, Colorado, New Mexico, and Arizona, are believed to be among the world’s oldest living organisms. The oldest of these trees grows in California, ancient enough to have been alive when the pyramids were still young.
And then there is the palace. The only royal palace used by a monarch in the United States stands in Honolulu, Hawaii. Iolani Palace belonged to King Kalakaua and Queen Lili’uokalani until the monarchy was overthrown in 1893. The building then served as the capitol until Hawaii became a state in 1959. Today it is a museum, a reminder that American history includes a kingdom in the Pacific.
Why these facts matter
Lists of facts can feel like trivia, but these numbers explain something real about the country. A nation that spans Arctic tundra, tropical islands, deserts, and temperate forests cannot have a single climate, a single landscape, or a single way of life. Its size is the reason its regions feel so different from one another, and why a drive across it can feel like crossing several countries.
The size also explains the variety. When a country is the third largest on Earth, it has room for a royal palace and a desert below sea level, for the oldest trees on the planet and the newest cities. The facts are not just impressive. They are the shape of the place.
Check the numbers yourself: geography facts of the United States and the largest states by area, ranked.
Rivers, lakes, and coastlines
America’s water tells its own story of scale. The Missouri River, often cited as the longest river in the United States, runs roughly 2,340 miles from the Rockies to its meeting with the Mississippi, a journey across the entire middle of the continent. The Mississippi itself, the river most Americans picture first, runs about 2,320 miles from Minnesota to the Gulf of Mexico. Together they drain a basin that covers more than a million square miles, an area larger than many countries.
The Great Lakes, shared with Canada, hold another superlative. Lake Superior alone is the largest freshwater lake in the world by surface area, and the five Great Lakes together hold roughly a fifth of the world’s fresh surface water. That is a staggering share for one region, and it explains why the lakes feel less like lakes and more like inland seas, complete with waves, storms, and shipwrecks.
The country’s coastlines add still more variety. The Atlantic coast runs from rocky Maine to subtropical Florida. The Pacific coast runs from the rainforests of Washington to the beaches of Southern California. The Gulf coast adds its own world of bayous and barrier islands. And Alaska’s coastline, at 6,640 miles, is longer than all the rest of the states’ coastlines combined in spirit, if not quite in fact.
States that break the pattern
For every American rule, there is a state that breaks it. Texas is famous for its size, but Alaska dwarfs it. California is famous for its population, yet it ranks only third in area. Delaware, the second smallest state, was the first state to ratify the Constitution, giving the tiniest a claim to the biggest historical honor.
Hawaii breaks the pattern in the other direction. It is the only state made up entirely of islands, the only state with a royal palace, and the only state where coffee is grown commercially on a significant scale. It is also the most recent state admitted to the Union along with Alaska, both joining in 1959, which means the map Americans learn in school has only looked this way for a few generations.
Then there are the quirks of shape. Colorado and Wyoming are famously close to rectangles, a rarity among states whose borders usually follow rivers and mountain ridges. Michigan is split into two peninsulas, and the Upper Peninsula is closer to Wisconsin than to the rest of its own state. These oddities are not trivia. They are the visible record of how the country was surveyed, bargained over, and settled.
How the numbers shape daily life
It is easy to treat these figures as curiosities, but they shape ordinary American life in concrete ways. The country’s size is why a cross-country flight takes the better part of a day and a cross-country drive takes the better part of a week. It is why weather in one part of the country can be a blizzard while another part swelters, and why a single national news broadcast must cover wildfires in the West, hurricanes in the Gulf, and snow in the Northeast on the same night.
Size also shapes the economy. A country with Alaska’s oil and gas, Texas’s energy and agriculture, California’s technology and farming, and the Midwest’s grain belt does not depend on any single industry or region. That diversity is a form of resilience, and it is a direct product of geography.
Finally, size shapes identity. Americans often identify first with their state or region, and only second with the country as a whole, because the country is simply too big and varied to feel like one place. The numbers in this article are the reason why. A nation of 3.8 million square miles, 50 states, and every climate on Earth was never going to feel small.
Frequently asked questions
What is the largest state in the USA?
Alaska, at 665,384 square miles. It is more than double the size of Texas, the second largest state, and bigger than Texas, California, and Montana combined.
What is the smallest state in the USA?
Rhode Island. Its total area is commonly given as about 1,545 square miles, with a land area of roughly 1,214 square miles.
Is Mauna Kea really taller than Mount Everest?
Measured from its base on the seafloor, yes: Mauna Kea stands more than 32,000 feet tall, compared with Everest’s 29,028 feet above sea level. Everest remains the tallest mountain above sea level.
Does the United States have an official language?
No. English is the most commonly spoken language and the language used in government, but the country has no official language at the federal level.
What is the highest and lowest point in the USA?
The highest point is Denali in Alaska at 20,308 feet. The lowest point is Death Valley in California at 282 feet below sea level.