How many states does the United States have?

The United States of America is a federal republic composed of states, each with its own government, but united under a federal system. Understanding the number of states is a fundamental aspect of its political geography and history.

• 50 is correct. The United States currently consists of 50 states, with Hawaii being the 50th state admitted to the Union in 1959, following Alaska earlier that year.
• 45 is incorrect; this number is too low and does not reflect the current composition of the U.S.
• 48 is incorrect; this was the number of contiguous states before Alaska and Hawaii were admitted, often referred to as the "lower 48."
• 55 is incorrect; this number is too high and does not correspond to the actual number of states in the U.S.