Argentina Postal codes - in Spanish, look under section "Medios de acceso al CPA".
Australian Post codes - Search
Austrian
Postal codes - from Uniserv
Belgian Postal codes - from Uniserv
Brazilian Post codes - Search - (in Portuguese) under Consulta CEP
Brunei- map of postal districts
Canada Post - Tracking, Postal Codes and Postal Outlets page
Canada - Postal file of Canada containing latitude and longitude, province, demographics etc. for sale.
Chinese Postsal/Telephone codes (some) - Ethan Michelson
Czech Postal codes - in English, Czech postal codes from Czech Post Office.
Czech
Postal codes - in English, download files
Danish
Postal codes - (in English) from Uniserv
Finnish Postal codes - (in Englis) from Uniserv
French Post codes - Search - (in French)
French Post codes - Search - (in English) from Uniserv
German
Post codes - (in English) from Uniserv
India Postal codes - From www.mapsofindia.com
Indonesian Post codes- Under Info Kodepos
Israeli
Postal Codes
- In Hebrew
Israeli
Postal Codes - In English
Italian Post codes - Search Index (in Italian)
Italian
Posal codes - (in English) from Uniserv
New Zealand - Search (in English)
Norwegian Post codes - Search (in Norwegian) in the form Postnummer.
Norwegian Postal codes - (in English) from Uniserv
Norwegian Post
codes - Search (in English)
Poland Postal codes - In Polish
Portugese
Postal Codes - (in English) from Uniserv
South African Postal codes - (in English) South African Post Office search
Spain - (in Spanish) search
Spanish Postal Codes - (in English) from Uniserv
Sri Lanka- Postal codes
Sri Lanka - Postal codes list
Sri Lanka -Postal codes Directory
Sweden - (in Swedish) - search
Swedish Postal Codes - (in English) from Uniserv
Switzerland - (in English) search from Uniserv
Switzerland - Search by town name
United Kingdom - Royal Mail Track and Trace page
United Kingdom Postal Codes - (in English) from Uniserv
United Kingdom - 20 free postal code addess lookups
United Kingdom - Search from Brainstorm UK
United States Postal Service - Track and Confirm page
United States Zip codes - Search - from the Semaphore Corporation. Also standardizes address output in USPS preferred format (i.e. Street becomes ST and so on), and can list addresses within the neighbourhood of another address.
United States Zip+4 codes - Search- from the USPS
United States Address - search - ZipAddress to lookup Zip+4 codes
United States Zip codes - Search and full address validation - University of Buffalo/Cedar site
United States Zip codes for US Vessels - Postal code lists for US Naval Ships
Uruguay - map of Montevideo postal districts and map of the rest of Uruguay districts from El Correo.
Uruguay - (in Spanish) list of postal codes per province, from El Correo.
Canada (in English)
Canada (in French)
Finland (in Finnish)
Finland (in English)
France (official site)
Germany (in German)
Germany (in English)
Iceland (in Icelandic)
Iceland (in English)
Ireland (in English and Irish)
Italy (in Italian)
Japan (in Japanese)
Latvia - in Latvian and English
The Netherlands - PTT (in Dutch)
Norway (in Norwegian)
Portugal (in English and Portuguese)
Singapore (in English)
Sweden (in Swedish)
Sweden (in English)
Switzerland (in English)
United Kingdom (in English)
United Nations (in English, French and German)
United States of America (in English)
Alta Vista Language Translator - Babel fish
British Forces Post Office - Allows access to international one to one service known as e-bluey and a look up for BFPO numbers the post codes used by British Forces world wide
European Postal code format - for 22 European countries
FRANK'S COMPULSIVE GUIDE TO POSTAL ADDRESSES
Freesearching's Zip and Postal code page - by Tom Kreaseck
Free Translation - Translates Major European languages and Web Pages
Free World Address Database by Mitchell Friedman
The Global Gazetteer- (commercial page) - details of a file containing > 750000 place names with geographic and demographic data such as postal codes and telephone area codes.
Graham Rhind's Postal Links And a Book by him contains details about European address formats.
PostOffice.com - links to Post Offices of the world
Uniserv - Postal code lookups for Austria Belgium Switzerland Germany Spain France Italy Luxembourg The Netherlands Portugal and the UK
United States - Official Abbreviations - States
United States - Official Abbreviations - Street Suffixes
United States - Official Abbreviations - Secondary Unit Designators
WESTMINSTER International The DM Support Specialists - U.S. & Canadian Postal Codes. Change of address and more
Zip Code
Canada - Canadian Postal Code and Canadian Cities Databases