Unofficial countries where U.S. dollars are extremely viable includes many of the countries in the Caribbean and South America.

There are also many countries that don’t have national dollars. These should not be confused with the U.S. dollar (USD). Examples of such countries are Australia, the Australian dollar (AUD), Canada with the Canadian dollar (CAD), Belize with Belize dollars (BEZ), Hong Kong’s national currency called the Hong Kong Dollar (HKD) Jamaica Dollar (JAM), New Zealand Zealand dollar (NZD), and finally Singapore, with Singapore dollars (SID).