This captivating night-time image of the U.S. was created using data from NASA's Suomi NPP satellite, utilizing the Visible Infrared Imaging Radiometer Suite (VIIRS) to detect light across various wavelengths. NASA GoddardKey Points to Remember
- Alaska takes the crown as the largest U.S. state in terms of land area, covering 665,384 square miles (1,723,337 square kilometers), and also holds the distinction of being the least densely populated.
- Texas follows closely as the second-largest, spanning 268,596 square miles (695,662 square kilometers).
- California ranks third in size, occupying 163,696 square miles (423,970 square kilometers), and is the most populous state.
To identify the largest state in the U.S.A., you can approach it in various ways, such as by looking at population (the number of residents in a state or region) or population density (the number of people per square mile compared to similar regions in other states or areas).
In this case, we evaluate state size based on land area — the actual physical size of each state — according to the U.S. Census Bureau, excluding factors like population or demographics. But first, let's discuss the United States as a whole.
The U.S. Ranks as the Third Largest Country
The United States is typically regarded as the third largest country in the world, trailing only Russia and Canada. The total area of the U.S., including the 48 contiguous states (the lower 48), Washington D.C., Alaska, and Hawaii's archipelago, is 3.8 million square miles (9.8 million square kilometers). Of this, about million square miles (5.7 million square kilometers) is land, with the rest being water.
It's important to note that other sources like World Population Review and Worldometer suggest that China is marginally larger than the U.S. in both land and total area (including both land and water), which would place the U.S. as the fourth largest country.
Next, let's dive into the largest states by total area, including both land and water, in the U.S.
The 5 Largest States
In 2019, an astronaut took this photo of mainland Alaska from the International Space Station (ISS) on a clear spring day, giving a glimpse of the vast size of the state. NASA/JSC- Alaska (665,384 sq. mi.)
- Texas (268,596 sq. mi.)
- California (163,696 sq. mi.)
- Montana (147,040 sq. mi.)
- New Mexico (121,590 sq. mi.)
Alaska
Alaska is the largest state by land area by a wide margin, but it also holds the title of the least densely populated state, based on the 2020 census. With 665,384 square miles of land, almost 86 percent of its area is land. However, the remaining 94,743 square miles of water means that Alaska contributes to over 40 percent of the total water area in the U.S.
Texas
Texas is the second-largest state among the lower 48. A fun piece of trivia: the town of Saxet, Texas, is a palindrome, meaning it can be read the same forward and backward.
California
The third-largest state is also home to the largest population. With 282 state parks, it has more than any other state in the U.S. While its coastline along the Pacific enjoys cooler temperatures, the highest recorded temperature on Earth occurred at Furnace Creek Ranch in Death Valley in 1913.
Montana
Custer's Last Stand, the legendary 1876 battle, took place along the Little Bighorn River in Montana after the U.S. Army attempted to relocate Native Americans onto reservations.
New Mexico
Don't mention it to Texas, but in New Mexico, cattle and sheep outnumber the human population. It's also home to the oldest capital city in the U.S., Santa Fe.
5 Smallest States
- Rhode Island (1,545 sq. mi.)
- Delaware (2,489 sq. mi.)
- Connecticut (5,543 sq. mi.)
- New Jersey (8,723 sq. mi.)
- New Hampshire (9,349 sq. mi.)
Rhode Island
Rhode Island is home to the oldest continually operating tavern in the U.S. (established in 1673) and boasts the highest percentage of Catholics in the country (as of 2017). Despite its small size, it supports a substantial population of nearly 1.1 million, based on the 2020 census.
Rhode Island is so small, it’s hard to even locate on a map. Its total land area barely exceeds 1,500 square miles.
SevenMaps/ShutterstockDelaware
Delaware was the very first state to join the Union in 1787. With an elevation of only 60 feet above sea level, it stretches 35 miles at its widest and just 9 miles at its narrowest point.
Connecticut
As the third smallest state in the U.S., Connecticut boasts numerous notable firsts, such as the nation's first speed limit in 1901 (12 miles per hour or 19 kilometers per hour), the first statehouse (1788), and the first public art museum (1842). It is also home to Yale University, where the first U.S. medical degree was issued in 1729.
New Jersey
My amusing home state boasts more diners and shopping centers than any other U.S. state. However, you aren't allowed to pump your own gas to reach any of them.
New Hampshire
New Hampshire, one of the original 13 colonies, made history in January 1776 by becoming the first settlement to establish both a constitution and an independent government separate from England.
All 50 States by Land Area
Although Texas is the largest among the 48 contiguous states, Alaska is the overall biggest state in the United States. (Foxys Graphic/Shutterstock).Here is a ranking of all U.S. states, ordered from the largest to the smallest based on their total land area in square miles, as per the U.S. Census Bureau.
- Alaska: 665,384 sq. mi.
- Texas: 268,596 sq. mi.
- California: 163,695 sq. mi.
- Montana: 147,040 sq. mi.
- New Mexico: 121,590 sq. mi.
- Arizona: 113,594 sq. mi.
- Nevada: 109,781 sq. mi.
- Colorado: 104,094 sq. mi.
- Oregon: 98,379 sq. mi.
- Wyoming: 97,813 sq. mi.
- Michigan: 96,714 sq. mi.
- Minnesota: 86,936 sq. mi.
- Utah: 84,897 sq. mi.
- Idaho: 83,569 sq. mi.
- Kansas: 82,278 sq. mi.
- Nebraska: 77,348 sq. mi.
- South Dakota: 77,116 sq. mi.
- North Dakota: 70,698 sq. mi.
- Oklahoma: 69,899 sq. mi.
- Washington: 71,298 sq. mi.
- Missouri: 69,707 sq. mi.
- Florida: 65,758 sq. mi.
- Wisconsin: 65,496 sq. mi.
- Georgia: 59,425 sq. mi.
- Illinois: 57,914 sq. mi.
- Iowa: 56,273 sq. mi.
- New York: 54,555 sq. mi.
- North Carolina: 53,819 sq. mi.
- Arkansas: 53,179 sq. mi.
- Alabama: 52,420 sq. mi.
- Louisiana: 52,378 sq. mi.
- Mississippi: 48,432 sq. mi.
- Pennsylvania: 46,054 sq. mi.
- Ohio: 44,826 sq. mi.
- Virginia: 42,775 sq. mi.
- Tennessee: 42,144 sq. mi.
- Kentucky: 40,408 sq. mi.
- Indiana: 36,420 sq. mi.
- Maine: 35,380 sq. mi.
- South Carolina: 32,020 sq. mi.
- West Virginia: 24,230 sq. mi.
- Maryland: 12,406 sq. mi.
- Hawaii: 10,932 sq. mi.
- Massachusetts: 10,554 sq. mi.
- Vermont: 9,616 sq. mi.
- New Hampshire: 9,349 sq. mi.
- New Jersey: 8,723 sq. mi.
- Connecticut: 5,543 sq. mi.
- Delaware: 2,489 sq. mi.
- Rhode Island: 1,545 sq. mi.
Washington, D.C. is not a state, but should the movement for D.C. statehood succeed, it would officially become the smallest state in the U.S. with an area of just 68 square miles (109 square kilometers).
