this map shows contiguous united states of america , in insets @ lower left, 2 states not contiguous
the contiguous united states of america consists of 48 adjoining u.s. states plus washington, d.c. (federal district), on continent of north america. term excludes non-contiguous states of alaska , hawaii , off-shore united states of america territories , possessions, include american samoa, guam, northern mariana islands, puerto rico, , united states of america virgin islands.
the greatest distance (on great circle route) exclusively within 48 contiguous states 2,802 miles (4,509 km, between florida , state of washington); greatest north-south line 1,650 miles (2,660 km).
together, 48 contiguous states , washington, d.c. occupy combined area of 3,119,884.69 square miles (8,080,464.3 km), 1.58% of total surface area of earth. of area, 2,959,064.44 square miles (7,663,941.7 km) land, composing 83.65% of u.s. land area, smaller of australia. officially, 160,820.25 square miles (416,522.5 km) water area, composing 62.66% of nation’s water area.
the contiguous united states of america placed 5th in list of countries , dependencies area; total area of country, including alaska , hawaii, ranks third. china , brazil countries larger in total area contiguous united states, smaller entire united states, while russian federation , canada 2 countries larger both. 2010 census population of area 306,675,006, comprising 99.33% of nation’s population, , density of 103.639 inhabitants/sq mi (40.015/km), compared 87.264/sq mi (33