How many countries are totally within the Western Hemisphere?

Answer 1

Several countries are located entirely within the Western Hemisphere, with absolutely no territory east of the Prime Meridian. Whilst the US mainland is entirely within the Western Hemisphere, external territories such as Guam and the Northern Mariana Islands are very much in the Eastern Hemisphere, disqualifying the USA. Countries entirely within the Western Hemisphere, sorted from closest to the Prime Meridian to furthest, are: Morocco, the Ivory Coast, Mauritania, Ireland, Portugal, Liberia, Guinea, Sierra Leone, Senegal, Iceland, Guinea-Bissau, the Gambia, Cape Verde, Brazil, Canada, Uruguay, Argentina, Suriname, Paraguay, Guyana, Bolivia, Barbados, Venezuela, Trinidad and Tobago, St Vincent and the Grenadines, St Lucia, Dominica, Grenada, Antigua and Barbuda, St Kitts and Nevis, Chile, Colombia, the Dominican Republic, Peru, Haiti, the Bahamas, Cuba, Ecuador, Jamaica, Panama, Costa Rica, Nicaragua, Honduras, Mexico, Belize, El Salvador, and Guatemala.

Answer 2

There are 13 countries that are 100% within the Western Hemisphere: Antigua and Barbuda, the Bahamas, Barbados, Dominica, Grenada, Jamaica, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, Belize, Canada, and the United States.