What countries use the US dollar?

The US dollar is legal tender in Panama, Ecuador, El Salvador, East Timor, Palau, Micronesia, Marshall Islands, the British Virgin Islands, the Turks and Caicos Islands, and, as a practical matter is the circulating currency of Zimbabwe, Peru, Uruguay, Cambodia and Afghanistan. It is also widely accepted in southern Canada and northern Mexico..

Bahamas, Bermuda, Barbados, Belize, Lebanon, Hong Kong, Macau, and several Arab countries have their own currencies which are pegged to the US dollar.