There are approximately 43000 zip codes. Number of ZIP codes periodically changes. For example, around 200 zip codes were added in the U.S. in 2006-2007.
The UK does not use zip codes it uses postal codes. Warwickshire has many different postal codes
New Zealand is a country and has many postal codes.
OK. States don't have Zip Codes. Cities have Zip Codes. You can get the complete list of ZIP codes in California under different Cities from here: http://www.zip4all.com/california/ca/ .
Different cities have different codes and countries don't have zip codes. Detailed list of Zip Codes of all cities of Pakistan can be found on Wikipedia.
27 zip codes
As far as I can tell, all 5 digit numbers are potential zip codes, so there are 99999 + 1 potential zip codes, or 100,000. Many of these are not actually is use.
There are several zip codes for El Metn, Lebanon. This is because there are many different municipalities located in El Metn, Lebanon. The zip codes can be found online.
There are many different zip codes for Kalookan City in the Philippines. They differ depending on what part of the city a person is in. There are 24 different codes for the city.
There are two different zip codes for Amissville, Virginia. Those zip codes are: 20106 and 22746.
33 zip codes
There are approximately 43000 zip codes in the USA
ZIP Codes are, by definition, postal codes exclusively for the United States. Other countries, including Pakistan, have their own systems of postal codes, but they are not called ZIP Codes. Different towns in Pakistan, and in many cases different parts of a city in Pakistan, have different postal codes.