Lower 48 States - World Population Review

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Our Methodology View all articles Geography > Lower 48 States United States Lower 48 States

Lower 48

Yes

State	Lower 48↓
	Alabama	Yes
	Arizona	Yes
	Arkansas	Yes
	California	Yes
	Colorado	Yes
	Connecticut	Yes
	Delaware	Yes
	Florida	Yes
	Georgia	Yes
	Idaho	Yes
	Illinois	Yes
	Indiana	Yes
	Iowa	Yes
	Kansas	Yes
	Kentucky	Yes
	Louisiana	Yes
	Maine	Yes
	Maryland	Yes
	Massachusetts	Yes
	Michigan	Yes
	Minnesota	Yes
	Mississippi	Yes
	Missouri	Yes
	Montana	Yes
	Nebraska	Yes
	Nevada	Yes
	New Hampshire	Yes
	New Jersey	Yes
	New Mexico	Yes
	New York	Yes
	North Carolina	Yes
	North Dakota	Yes
	Ohio	Yes
	Oklahoma	Yes
	Oregon	Yes
	Pennsylvania	Yes
	Rhode Island	Yes
	South Carolina	Yes
	South Dakota	Yes
	Tennessee	Yes
	Texas	Yes
	Utah	Yes
	Vermont	Yes
	Virginia	Yes
	Washington	Yes
	West Virginia	Yes
	Wisconsin	Yes
	Wyoming	Yes

The United States is made up of 50 states, but 48 states – also known as the conterminous states, the lower 48, or the contiguous states – are adjoined.

Two of the states – Alaska and Hawaii – are not part of the lower 48 states. This is because Alaska is separated by British Columbia, Canada, and Hawaii is an island. Washington, D.C., is also part of the contiguous United States, although it is not an official state. The contiguous United States is not to be confused with the continental U.S., which includes the state of Alaska.

The lower 48 states, along with D.C., have an area of over 3.1 million square miles. Water makes up over 160,000 square miles or over 62% of the world’s total water area. The remainder is land area and is similar to the size of Australia.

Based on census data from 2010, over 306 million people live in the contiguous United States. This makes up over 99% of the country’s total population. The population density of just the lower 48 states is over 103 people per square mile.