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Postal barcodes are the ones postal services print on mail, so their machines can sort it: the address, a delivery point, a tracking number. Most are 4-state codes - a row of bars of the same width, each one full height, top half, bottom half or short - which hold a lot in a thin strip. Each postal service decides what goes in its barcode and assigns the numbers: ask it before you print.
| The postal symbologies | |
| Australia Post | Australia: the DPID of an address, in four kinds of barcode. |
| DAFT Code | Any 4-state code, spelled out bar by bar. |
| Deutsche Post | Germany: Identcode and Leitcode, on parcels and letters. |
| Dutch Post | The Netherlands: the KIX code, postcode and house number. |
| Facing Identification Mark | United States: the FIM on reply mail. |
| Japanese Postal | Japan: postcode and address numbers. |
| Korean Postal | South Korea: the 6-digit postal code. |
| Planet Code | United States: mail tracking, older. |
| PostNet Code | United States: the ZIP code, older. |
| Royal Mail | United Kingdom: the 4-State Customer Code and Mailmark. |
| USPS Intelligent Mail | United States: today's barcode, ZIP code and tracking. |
What they share with every other barcode - the text position, the quiet zone, the color - is in the Barcode section. A postal barcode is usually printed at a set size: Keep aspect ratio keeps its bars in proportion while you resize the element.
