Basic information

| Field | Information | |---|---| | Official Name | United States of America | | Common Name | United States; United States of America; U.S.; USA | | Native Name(s) | United States of America | | Nicknames | America; the States; U.S. | | Motto | **In God We Trust** (official national motto); **E pluribus unum** is a traditional motto | | Geographic Level | Sovereign country / federal republic | | Country | United States | | State/Province | _Not applicable_ | | Capital | Washington, D.C. | | Government Type | Federal presidential constitutional republic | | Date Founded | July 4, 1776 (Declaration of Independence); Constitution effective March 4, 1789 | | Time Zone | Multiple time zones, including Atlantic, Eastern, Central, Mountain, Pacific, Alaska, and Hawaii-Aleutian | | Latitude | Approx. 39.8° N (country centroid; varies widely) | | Longitude | Approx. 98.6° W (country centroid; varies widely) | | Elevation | Mean elevation commonly reported around 760 m (2,500 ft); ranges from Death Valley to Denali | | Total Area | About 9.83 million sq km (about 3.8 million sq mi) | | Population | About 335 million (2020s estimate; 2020 Census counted 331,449,281) | | Population Density | About 34 people per sq km (varies by source and year) | | ZIP/Postal Codes | ZIP Code system used nationwide | | Area Codes | Multiple telephone area codes nationwide | | Official Languages | No official language at the federal level; English is the de facto national language | | Currency | United States dollar (USD) | | Demonym | American |