Full Name United States of America (USA) Capital City Washington DC Area 9,630,000 sq km 3,718,143 sq miles Population 290,000,000 Time Zone GMT/UTC -5 (Eastern) GMT/UTC -6 (Central) GMT/UTC -7 (Mountain) GMT/UTC -8 (Pacific Standard) Daylight Saving Start early April Daylight Saving End late October Languages English (essential) American English encompasses a multitude of regional accents of differing degrees of intelligibility. Spanish (other) Spanish has effective dual-language status in parts of southern California, New Mexico, Texas and Miami. Native American languages (other) There are 400,000 speakers of Native American dialects. Religion Protestant (50%), Roman Catholic (25%), Jewish (2%), Muslim (1%) Currency US Dollar (US$) Electricity 110V 60Hz Electric Plug Details American-style plug with two parallel flat blades above a circular grounding pin Japanese-style plug with two parallel flat blades Country Dialing Code 1 |