CodePostal.co is an online reference and search tool for finding postal code information across France. Visitors can enter a postal code or place name to look up associated locations and explore listings by locality, department, or region. The site features commonly searched destinations, including Paris, Lyon, Marseille, Nantes, and Toulouse, alongside extensive directories covering French departments and administrative regions.

The platform explains how French postal codes work, noting their five-digit format and their role in identifying delivery areas. Its informational content also describes the system’s introduction in 1964, regional variations such as overseas department codes, and the use of postal codes in mail delivery, logistics, administration, business, and geographic services.

CodePostal.co is designed to help individuals and organizations quickly find or verify location-related postal information, supporting more accurate addressing for correspondence and deliveries. The site also provides contact, FAQ, advertising, and linking information. In addition to its French service, it links to postal-code resources for numerous countries, making it part of a broader collection of international postcode lookup sites.