Postal code of New South Wales in Australia?

Answer 1

The area code for New South Wales is (02), or +61 2 in international format. Note also that the telephone area code boundaries do not exactly follow state lines; there are a few towns along the Victoria and South Australia state borders that are in the area code of the adjoining state.

(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)

Answer 2

New South Wales is a huge state with many postcodes. Most New South Wales postcodes are four digits long and begin with a 2: specifically, NSW postcodes range from 2619 to 2898 and 2921 to 2999.
In addition, some Post Office box numbers and Large Volume Receivers (this includes corporations, government departments and other institutions) have postcodes ranging from 0200 to 0299.