When using PostalMethods for sending mail to outside of the United States, the last address line must show only the destination country name. The following list contains country names which may be used.
| Country Name |
| Afghanistan |
| Albania |
| Algeria |
| Andorra |
| Angola |
| Anguilla |
| Antigua and Barbuda |
| Argentina |
| Armenia |
| Aruba |
| Australia |
| Austria |
| Azerbaijan |
| Bahamas |
| Bahrain |
| Bangladesh |
| Barbados |
| Belarus |
| Belgium |
| Belize |
| Benin |
| Bermuda |
| Bhutan |
| Bolivia |
| Bosnia and Herzegovina |
| Botswana |
| Brazil |
| Brunei Darussalam |
| Bulgaria |
| Burkina Faso |
| Burundi |
| Cambodia |
| Cameroon |
| Canada |
| Cape Verde |
| Cayman Islands |
| Central African Republic |
| Chad |
| Chile |
| China |
| Christmas Island |
| Cocos (Keeling) Islands |
| Colombia |
| Comoros |
| Congo |
| Congo Democratic Republic of the |
| Cook Islands |
| Costa Rica |
| Côte d'Ivoire |
| Croatia |
| Cuba |
| Cyprus |
| Czech Republic |
| Denmark |
| Djibouti |
| Dominica |
| Dominican Republic |
| Ecuador |
| Egypt |
| El Salvador |
| Equatorial Guinea |
| Eritrea |
| Estonia |
| Ethiopia |
| Falkland Islands (Malvinas) |
| Faroe Islands |
| Fiji |
| Finland |
| France |
| French Guiana |
| French Polynesia |
| Gabon |
| Gambia |
| Georgia |
| Germany |
| Ghana |
| Gibraltar |
| Greece |
| Greenland |
| Grenada |
| Guadeloupe |
| Guatemala |
| Guernsey |
| Guinea |
| Guinea-Bissau |
| Guyana |
| Haiti |
| Holy See (Vatican City State) |
| Honduras |
| Hong Kong |
| Hungary |
| Iceland |
| India |
| Indonesia |
| Iran Islamic Republic of |
| Iraq |
| Ireland |
| Isle of Man |
| Israel |
| Italy |
| Jamaica |
| Japan |
| Jersey |
| Jordan |
| Kazakhstan |
| Kenya |
| Kiribati |
| Korea Democratic People's Republic of |
| Korea Republic of |
| Kuwait |
| Kyrgyzstan |
| Lao People's Democratic Republic |
| Latvia |
| Lebanon |
| Lesotho |
| Liberia |
| Libyan Arab Jamahiriya |
| Liechtenstein |
| Lithuania |
| Luxembourg |
| Macao |
| Macedonia the former Yugoslav Republic of |
| Madagascar |
| Malawi |
| Malaysia |
| Maldives |
| Mali |
| Malta |
| Martinique |
| Mauritania |
| Mauritius |
| Mayotte |
| Mexico |
| Moldova Republic of |
| Monaco |
| Mongolia |
| Montenegro |
| Montserrat |
| Morocco |
| Mozambique |
| Myanmar |
| Namibia |
| Nauru |
| Nepal |
| Netherlands |
| Netherlands Antilles |
| New Caledonia |
| New Zealand |
| Nicaragua |
| Niger |
| Nigeria |
| Niue |
| Norfolk Island |
| Norway |
| Oman |
| Pakistan |
| Panama |
| Papua New Guinea |
| Paraguay |
| Peru |
| Philippines |
| Pitcairn |
| Poland |
| Portugal |
| Qatar |
| Réunion |
| Romania |
| Russian Federation |
| Rwanda |
| Saint Barthélemy |
| Saint Helena |
| Saint Kitts and Nevis |
| Saint Lucia |
| Saint Martin (French part) |
| Saint Pierre and Miquelon |
| Saint Vincent and the Grenadines |
| San Marino |
| Sao Tome and Principe |
| Saudi Arabia |
| Senegal |
| Serbia |
| Seychelles |
| Sierra Leone |
| Singapore |
| Slovakia |
| Slovenia |
| Solomon Islands |
| South Africa |
| South Georgia and the South Sandwich Islands |
| Spain |
| Sri Lanka |
| Sudan |
| Suriname |
| Swaziland |
| Sweden |
| Switzerland |
| Syrian Arab Republic |
| Taiwan Province of China |
| Tajikistan |
| Tanzania United Republic of |
| Thailand |
| Timor-Leste |
| Togo |
| Tokelau |
| Tonga |
| Trinidad and Tobago |
| Tunisia |
| Turkey |
| Turkmenistan |
| Turks and Caicos Islands |
| Tuvalu |
| Uganda |
| Ukraine |
| United Arab Emirates |
| United Kingdom |
| Uruguay |
| Uzbekistan |
| Vanuatu |
| Venezuela |
| Viet Nam |
| Virgin Islands British |
| Wallis and Futuna |
| Western Sahara |
| Yemen |
| Zambia |
| Zimbabwe |
United States And Territories
| Territory Name |
| American Samoa |
| Micronesia Federated States of |
| Guam |
| Marshall Islands |
| Northern Mariana Islands |
| Puerto Rico |
| Palau |
| United States Minor Outlying Islands |
| United States of America |
| Virgin Islands U.S. |
