Developer Documentation

Comprehensive ZIP code and postal code reference for developers, logistics professionals, and data analysts. Covers postal codes worldwide with geographic data, country postal systems, state/province breakdowns, statistics, interactive tools, glossary, and in-depth stories. 15 languages supported.

• Postal codes with latitude, longitude, city, state, and county data
• Countries with postal system format, regex patterns, and statistics
• States/provinces with postal code ranges and density
• Cities with postal code listings
• Postal code statistics — distribution, density, population coverage
• Country comparisons of postal systems
• Interactive tools for postal code lookup, validation, distance
• Postal terminology glossary
• In-depth stories on postal systems organized by series

curl -s "https://zipfyi.com/api/v1/countries/"

{
  "count": 636,
  "next": "https://example.com/api/v1/items/?page=2",
  "previous": null,
  "results": [
    {"slug": "example", "name": "Example Item", "...": "..."}
  ]
}