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United States: Surface Area

Total Surface Area*: 9,842,621 km2 / 3,800,257 mi2 (World Factbook – Countries)

*Includes the 48 contiguous United States, District of Columbia, the island state of Hawaii, the detached state of Alaska, and the Commonwealth of Puerto Rico (also the Free Associated State of Puerto Rico).

  • World Rank: #3, 1.93% of Earth’s total surface area.
  • 93% is Land Surface Area:  9,156,552 km2 (3,535,365 mi2) – 6.15% of the world’s total land surface.
  • 7% is Water Surface Area: 686,069 km2 (264,892.7 mi2) – 0.19% of the world’s water surface.
  • ~640 million acres of US land (2.59 million km2 / 1.0 million mi2), 28.28% of the United States’ land area, is held in trust by the Federal government through national parks, national forests, national wildlife refuges, and other Federal property.  This does not include separate state and local lands.