Interesting facts about postal code
The English characters are also used for these post codes at some countries in the world. Netherland and Canda are some of them. But for majority of countries are using a series of digits (numeric) for that. Even in Sri Lanka, we are using only digits. There are some countries which are using both digits and English characters (alphanumeric). This kind of ZIP codes are for identifying the areas and some post codes are assigned to individual addresses or to institutions. The main reason for that is receiving large volumes of mail.
In Sri Lanka also, postal code is highly using for day-to-day mail activities. Each postal divison has its own post code. In Colombo district, there are post codes of 00100, 00200, …. 01400 from Colombo 01 to Colombo 14. And in other districts also, you can find the post codes. Find those postal codes from below link.