The street name is the backbone of a postal address. An error in the type of street, a misplaced abbreviation, or a truncated name is enough to delay a letter or even return it to the sender. The rules governing its drafting are not solely the domain of La Poste: they are based on municipal references, national standards, and digital practices that have evolved significantly in recent years.
Street Name and National Address Database: An Operational Link
Writing a correct street name is no longer limited to applying typographical conventions on an envelope. Since the rise of the National Address Database (BAN), each municipality can create, modify, and disseminate its addresses through dedicated digital tools. The name recorded in this reference serves as the sole source for postal services, energy providers, and fiber operators.
Before drafting an address, checking that the street name exists as such in the BAN helps avoid a mismatch between what appears on the mail and what automatic sorting systems recognize. An entry missing from the official reference can block a shipment long before a postal worker takes it on.
Municipalities now have tools like “My Addresses” to control and correct names at the local level. Some communities, such as Segré in Anjou Bleu, publish address request procedures that include assigning the number and validating the street name before dissemination to providers. Consulting examples of compliant street names helps understand what systems concretely expect.
Type of Street and Name: The Writing Rules That Matter
The street name consists of two elements: the type (street, avenue, boulevard, dead end, path, square, alley) and the name itself. Each follows precise conventions, and the most common errors focus on three points.
Capitalization and Articles in the Street Name
The type of street is written in lowercase (street, avenue, boulevard), except at the beginning of a line. The name that follows takes a capital letter for each meaningful word. Articles and prepositions integrated into the name remain in lowercase, unless they start the name: “rue de la Liberté,” “avenue du Général-de-Gaulle.”
Hyphens connect the elements of a compound name when it is a person’s name or a historical event. One writes “rue du Huit-Mai-1945” and not “rue du 8 mai 1945.” This point generates a significant portion of inconsistencies in municipal databases.
Standardized Abbreviations
La Poste and the AITF recommend abbreviating the type of street only when the line length exceeds the field capacity (generally limited to 32 or 38 characters depending on the systems). Common abbreviations include:
- “Bd” for boulevard, “Av” for avenue, “Pl” for square, without a period in the standardized postal format
- “Imp” for dead end, “All” for alley, “Ch” for path
- “Rue” is not abbreviated: the word is already short, and any truncation creates ambiguity with other types of streets
Aside from this length constraint, writing the type of street in full remains the most reliable practice for both automatic sorting and human reading.
Place Names and Hamlets
Place names pose a particular problem. They do not always include a type of street. One writes the name of the place directly on line 4 of the address, without preceding it with “place name” (this mention is optional and often causes confusion in sorting software). The IGN’s toponymy charter specifies that the spelling of the place name must follow the cadastral spelling, not the local oral usage.
Postal Label Errors: What Really Blocks Delivery
NPAI returns (Does Not Live at the Address Indicated) do not all stem from relocations. Some result from poorly formed labels that prevent the optical sorting machine from associating the address with a distribution code.
The three main causes of automatic rejection are confusion between similar types of streets (alley/avenue, passage/square), the absence of the number in the street, and the inversion between lines 4 (street) and 5 (address complement). A complement like “Building B, stair 3” placed on the same line as the street name saturates the field and renders the label unreadable for the system.
For companies managing high-volume mail campaigns, pre-normalization through an address restructuring tool significantly reduces the rate of undelivered mail. Field returns vary on the exact effectiveness of these tools depending on the databases used, but the principle remains the same: confront each label with the BAN reference before printing.
International Postal Address: Adapting the Street Name to the Destination Country
The French format (number before the street name) is not universal. In the UK and most English-speaking countries, the number also precedes the street name, but the postal code is placed on a separate line after the city. In Germany, the type of street is integrated into the name as a suffix (Hauptstraße, Bahnhofstraße), without separation.
- For a shipment to Japan, the address follows a reversed order: from largest to smallest (prefecture, city, district, block, building number)
- In the Netherlands, the postal code precedes the city, and the house number follows the street name without a comma
- In Belgium, the format remains close to the French standard, but the postal code consists of four digits and precedes the name of the municipality
The Universal Postal Union recommends writing the name of the destination country in uppercase on the last line, in the language of the sending country or in English. This line is not part of the street name but its absence systematically causes a blockage at the international sorting center.
The street name remains a technical object whose quality depends as much on typographical conventions as on its consistency with the digital references used by postal operators. Checking the existence of the address in the National Address Database before any shipment is now the most useful gesture, well before the choice between uppercase and lowercase letters.
