Guide
Understanding Postal Code Systems Worldwide
6 min read
Addran Team
Postal codes are essential for efficient mail delivery worldwide, but formats vary significantly by country.
Major Postal Code Systems
Different countries use different formats - from 5-digit ZIP codes (US) to alphanumeric codes (UK, Canada).
Common Mistakes
Missing postal codes, incorrect formats, and omitted leading zeros are frequent errors.
Best Practices
Always include postal codes, use the correct format for each country, and verify codes using official postal services.