Postal Codes Generator
Postal and courier codes: USPS, Royal Mail, Australia Post, PostNL, DPD and more.
USPS Intelligent Mail (IMb)
US letters & flatsPostal Codes › USPS Intelligent Mail (IMb)
Postal barcodes help mail carriers sort letters and track parcels. Many are 4-state codes, where each bar is full height, short, or extends only up or only down, instead of using bar widths. This category covers codes for the US, UK, Australia, Japan, the Netherlands and Germany, plus international tracking numbers.
Use the barcode your postal operator or carrier asks for, with the data format they give you. For US letters use Intelligent Mail (IMb), for US parcels IMpb, and for international registered mail a UPU S10 number. POSTNET and PLANET are older US codes kept for legacy systems.
14 barcode types in Postal Codes
Which Postal Codes barcode should I use?
| Barcode type | Allowed data | Best for |
|---|---|---|
| USPS Intelligent Mail (IMb) | 20, 25, 29 or 31 digits | US letters & flats |
| USPS POSTNET | 5/9/11 digits | US mail (legacy) |
| USPS PLANET | 11/13 digits | US mail tracking (legacy) |
| USPS IM Package (IMpb) | AI 420 + 92 routing | US parcels |
| Royal Mail 4-State (RM4SCC) | A-Z 0-9 | UK mail |
| Royal Mail Mailmark 2D | Mailmark data string | UK business mail |
| Australia Post 4-State | FCC + DPID (+ customer info) | Australian mail |
| Japan Post Customer Code | Postcode + address | Japanese mail |
| KIX (PostNL) | A-Z 0-9 | Netherlands mail |
| Deutsche Post Identcode | 11 digits | German parcels |
| Deutsche Post Leitcode | 13 digits | German parcels routing |
| DAFT (custom 4-state) | D A F T letters | Custom 4-state |
| UPU S10 (intl. tracking) | 2 letters + 8 digits + check + country | International registered mail |
| DPD Parcel Label | DPD 28-char format | DPD parcels |
How to Create a Barcode in 3 Steps
Choose a barcode type
Select a category on the left (e.g. Linear Codes), then the exact type like Code-128.
Enter data & customise
Type your data — we check it live and add check digits. Adjust size, font and colors.
Download or print
Get PNG, JPG, SVG, PDF or EPS, or print a full sheet of labels in one click.
Why Use QRCodeChamp Barcode Generator
125+ barcode types
Every linear, 2D, GS1, postal, healthcare and payment code.
Live validation
Friendly errors with one-click fixes and automatic check digits.
Print-ready PDF
Exact mm sizes, label sheets (Avery, A4, 4×6 thermal).
Bulk barcodes
Paste a list or generate number sequences.
Choose the Type of Barcode You Need
Not sure which barcode to use? Start with what you need it for — we’ll pick the right type.
Frequently Asked Questions
Use EAN-13 or UPC-A for products sold in stores, Code-128 for shipping and inventory, GS1-128 or SSCC for pallets, ISBN for books and Data Matrix or QR codes when you need to store more data in a small space.
Yes. Every barcode you create here is free to download and use commercially, without a watermark or an account.
To sell products in retail stores you need a GS1 company prefix, so your EAN or UPC numbers are unique worldwide. For in-store or internal use you can create codes without one.
A typical EAN-13 is about 37 × 26 mm (100%). Keep bars at least 0.19 mm wide for most scanners, leave the quiet zone around the code empty and print dark bars on a light background.
Yes. Tick “One barcode per line”, paste a list or use Bulk / Sequence to create a numbered series, then download a ZIP, a multi-page PDF or a label sheet.