More than 70 countries have had currency boards.

Worldwide use of theU.S. dollar and the euro:

  United States

  External adopters of the US dollar

  Currencies pegged to the US dollar

  Currencies pegged to the US dollar w/ narrow band

  Eurozone

  External adopters of the euro

  Currencies pegged to the euro

  Currencies pegged to the euro w/ narrow band

Note that the Belarusian ruble is pegged to the Euro, Russian Ruble and U.S. Dollar in a currency basket.

More than 70 countries have had currency boards. Currency boards were most widespread in the early and mid 20th century.^[1]

Worldwide official use offoreign currency or pegs.

  US dollar users, including the United States

  Currencies pegged to the US dollar

  Euro users, including the Eurozone

  Currencies pegged to the euro

  Australian dollar users, including Australia

  Indian rupee users and pegs, including India

  New Zealand dollarusers, including New Zealand

  Pound sterling users and pegs, including the United Kingdom

  Russian ruble users, including Russia and other territories

  South African randusers (CMA, including South Africa)

  Special drawing rightsor other currency basket pegs

  Three cases of a country using or pegging the curren