The United States has 50 states that include Alabama, Arizona, Alaska, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin and Wyoming. The District of Columbia is a part of the United States, but is not considered a true state, although it is the capital of the United States.
Of the 50 states that make up the United Stated of America, Delaware is the oldest; it entered into the Union on December 7, 1787. Delaware was followed 5 days later by Pennsylvania. Hawaii is the youngest of the states; it entered into the Union on August 21, 1959. It was preceded by Alaska around 8 months earlier on January 3, 1959. Alaska is the largest state in the terms of square mileage, but ranks at number 47 in relation to the population of the state. California is the most populous state with around 38 million residents.