Capital city of United States of America is Washington, D.C.

Language(s) English Literacy rate 99% Currency US Dollar Capital City Washington, D.C. Country code +1 Domain(TLD) .us Ethnicity Native American, Pacific Islander, Hispanic or Latino Religion Christianity, Islam, & Traditional faiths Nationality American Driving Side Drive on the Right-hand side Date Format dd/mm/yyyy Total Area 3,796,742 sq mi (9,833,520 km2) Timezone UTC−4 to −12, +10, +11 Average elevation 760 m (2,493 ft) Coastline 19,924 Km Mains Electricity 120 V, 240 V Emergency Telephone Numbers View all Embassies United States of America embassies in different countries