Last reviewed: September 2, 2026
United States is listed in Northern America, within Americas. Its capital is Washington D.C.. This page brings together the most commonly needed identifiers and geography facts in one place, with links to related reference lists.
Where is United States?
For broad geographic classification, United States is grouped under Americas and the subregion Northern America. Regional labels can vary between statistical and geographic organizations, so this site uses one consistent classification for browsing rather than claiming there is only one valid convention.
What are the country codes for United States?
The ISO-style two-letter code shown on this page is US, while the three-letter code is USA. Two-letter codes are especially common in software, forms and country-code domains; three-letter codes are useful where a more recognizable abbreviation is preferred. See our country code guide for context.
Borders and nearby geography
United States has the following land-border entries in our source dataset: Canada, Mexico. Island states and countries without a land frontier may show no land borders even though they have maritime neighbors.