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Lower 48 States 2021

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.

Lower 48 States 2021

State 2021 Pop.
Alabama4,934,193
Arizona7,520,103
Arkansas3,033,946
California39,613,493
Colorado5,893,634
Connecticut3,552,821
Delaware990,334
Florida21,944,577
Georgia10,830,007
Idaho1,860,123
Illinois12,569,321
Indiana6,805,663
Iowa3,167,974
Kansas2,917,224
Kentucky4,480,713
Louisiana4,627,002
Maine1,354,522
Maryland6,065,436
Massachusetts6,912,239
Michigan9,992,427
Minnesota5,706,398
Mississippi2,966,407
Missouri6,169,038
Montana1,085,004
Nebraska1,951,996
Nevada3,185,786
New Hampshire1,372,203
New Jersey8,874,520
New Mexico2,105,005
New York19,299,981
North Carolina10,701,022
North Dakota770,026
Ohio11,714,618
Oklahoma3,990,443
Oregon4,289,439
Pennsylvania12,804,123
Rhode Island1,061,509
South Carolina5,277,830
South Dakota896,581
Tennessee6,944,260
Texas29,730,311
Utah3,310,774
Vermont623,251
Virginia8,603,985
Washington7,796,941
West Virginia1,767,859
Wisconsin5,852,490
Wyoming581,075

Lower 48 States 2021