Postal code

A postal code (known in various countries as a post code, postcode, or ZIP code) is a series of letters and/or digits appended to a postal address for the purpose of sorting mail. Once postal codes were introduced, other applications became possible. In February 2005, 117 of the 190 member countries of the Universal Postal Union had postal code systems. Countries that do not have national systems include Ireland and Panama. Although Hong Kong and Macau are now Special Administrative Regions of China, each maintain their own long-established postal system, which does not utilize postal codes for domestic mail, and no postal codes are assigned to Hong Kong and Macau. Mails between Hong Kong, Macau and mainland China are treated as international. Although postal codes are usually assigned to geographical areas, special codes are sometimes assigned to individual addresses or to institutions that receive large volumes of mail, such as government agencies and large commercial companies. One example is the French Cedex system.
Albania - Postal Codes of Albania -
Algeria - Algeria List of postal codes in Algeria
Andorra - Codis postals del Principat d'Andorra
Argentina -Argentina Postal codes
Australia - Australian Post codes
Austria - Austrian Post codes - (English)
Azerbaijan - Postal codes of Azerbaijan - (in Azeri)
Bangladesh - Postal Codes of Bangladesh -
Belgium - Belgian Post codes -
Belgium - Postal Codes of Belgium
Belgium - Belgian Postal (ZIP) Codes
Bosnia-Hercegovina - Bosnia-Hercegovina Postal Codes
Brazil - Brazilian Post codes -
Canada Post - Postal Codes of Canada -
Canada - Canadian Post codes
Cape Verde - Postal Codes of Cape Verde -
Cayman Islands - Cayman Islands Postal Codes -
Chile - Postal Codes of Chile Correos Chile - (En Español)
China - Chinese postal codes & telephone area codes -
China - Telephone & Postal Codes of China
Colombia - Postal Codes of Colombia - (En Español)
Costa Rica - Postal Codes of Costa Rica - (En Español)
Croatia - Postal Codes of Croatia -
Cyprus - Postal Codes of Cyprus - (in English) 
Czech Republic - Czech Republic Postal Codes
Denmark - Postal Codes of Denmark -
Ecuador - Postal Codes of Ecuador  - (En Español)
Faroe Islands - Postal Codes in the Faroe Islands -
Finland - Postal Codes of Finland - (In Finnish)
France - Postal Codes of France -
Germany - Postal Codes In Germany - (English)
Germany - Postal Codes of Germany - (English)
Germany - Post codes of Germany -(in German)
Germany - Postal Codes of Germany - (German)
Greece - Postal Codes of Greece
Guatemala - Postal Codes of Guatemala - (En Español)
Guernsey - Guernsey Postcode Finder -
Holy See - Postal Code for the Vatican is: SCV-00120
Honduras - Postal Codes of Honduras -
Hungarian - Hungary
Iceland - Iceland -  Post Office (Icelandic)
Iceland - Iceland -
India Post Office - India Post Office -
Indonesia - Indonesia -
Ireland - Ireland - The Letter Post page
Ireland - item tracking page
Isle of Man - Isle of Man -
Italy - Italy -
Italian Post codes -Italian Post codes- by Italian cities (Italian), I Codici di Avviamento Postale Italiani - Regioni Province Comuni 
Japan Postal codes - Japan Postal codes - Search (in English)
Japan Postal codes - Japan Postal codes
Japan Postal codes - Japan Postal codes
Jordan -Jordan - Ministry of Post & Communication (English)
Kenya - Kenya Postcodes -
Kuwait - Kuwait Postcodes -
Lebanon - Lebanon Postcodes
Liechtenstein - Liechtenstein Postcodes -  Postcodes for Liechtenstein and of Switzerland (English)
Luxembourg - Luxembourg Postcodes -
Macedonia - Macedonia Postcodes - (in Macedonian) - Makedonska Posta.  Also, interactive map to list all postal codes per area. 
Madagascar - Madagascar Postcodes -
Malaysia - Malaysia Postcodes -
Mexico - Mexico Postcodes -Código Postal (Spanish) 
Montenegro - Montenegro Postcodes -
Morocco - Morocco Postcodes -  the postal codes (English)
National Address Server - National Address Server -
National Address & ZIP+4 Browser - National Address & ZIP+4 Browser -
Netherlands - Netherlands Postcodes - Postcode Opzoeken
New Caledonia - New Caledonia Postcodes
New Zealand - New Zealand Postcodes - Search (in English)
Norwegian Post codes -Norwegian Post codes -
Oman - Oman Postcodes -
Pakistan - Pakistan Postcodes - Post Office (English)
Papua New Guinea - Papua New Guinea Postcodes -
Paraguay - Paraguay Postcodes -
Philippines - Philippines Postcodes -  Zip Codes
Portuguese Post codes - Portuguese Post codes
Romania - Romania Postcodes - Postal Codes
Russia - Russia Postcodes -
Singapore Postal codes -Singapore Postal codes-
Slovakia - Slovakia Postcodes - Postal Codes 
Slovenian Postal codes - Slovenian Postal codes -
South African Postal codes - South African Postal codes
Spain - Spain Postcodes -
Sri Lanka - Sri Lanka Postcodes -
Sri Lanka- Sri Lanka Postcodes -
Sri Lanka - Sri Lanka Postcodes -
Swaziland - Swaziland Postcodes - Post Office, official post codes (English)
Sweden - Sweden  Postcodes -
Switzerland - Switzerland Postcodes - Post Office (English) also available in French, Deutsch and Italian
Switzerland - Switzerland Postcodes -
Taiwan Area Postal Codes - Taiwan Area Postal Codes - (in English) - list of postal codes by county/district.
Thailand - Thailand Postcodes - (in Thai and English)
Tunisia - Tunisia Postcodes -
Turkey - Turkey Postcodes -
Ukraine - Ukraine Postcodes
United Kingdom Postcodes - Post Office (English)
United Kingdom -United Kingdom Postcodes -
United Kingdom - United Kingdom Postcodes - AFD
United Kingdom - United Kingdom Postcodes - Postcodes from Brainstorm
United Nations - United Nations - Post Office (English, French & German)
United Parcel Service - United Parcel Service -
U.S. Postal Service Address Quality & ZIP Code Lookup - U.S. Postal Service Address Quality and ZIP Code Lookup -
United States - United States - Post Office
USA ZIP Codes - USA ZIP Codes -
United States Address -United States Address-
United States Postage Service Rate Calculator - United States Postage Service Rate Calculator -
United States Postal Service - United States Postal Service-
United States Postal Service Rates - United States Postal Service Rates -
United States Postal Service Abbreviations - United States Postal Service Abbreviations -
United States Zip codes -United States Zip codes -
United States Zip codes -United States Zip codes-
United States Zip codes -United States Zip codes -
United States Zip codes for US Vessels - United States Zip codes for US Vessels -
Uruguay - Uruguay  -
Uruguay - Uruguay -
Venezuela - Venezuela - Post Office (no English)
ZIPCodeDownload - ZIPCodeDownload - USA and Canadaian Postal Code data downloads and services. Free ZIP Code distance and radius searches.
ZIPCodeWorld Postal Code Database - ZIPCodeWorld Postal Code Database - Postal database subscription service for United States, Canada and Mexico. Free lookup available.
Zip Codes Finders - Zip Codes Finders - US Zip Code information, weather and maps.
Zip2 Yellow Pages - Zip2 Yellow Pages -