How to Write an Address in Luxembourg: Format, Postcodes and Examples

International  |  September 27, 2026  |  2 min read

Addresses in Luxembourg follow their own order and postcode rules. This guide shows how to write one correctly, with real postcode examples and the most common mistakes, whether you are sending mail, building a checkout form or preparing test data.

Address format

House number, comma and street, then L- postcode and locality.

Luxembourg postcode format

Format: L-9999

Luxembourg postcodes have four digits and are often written with the L- prefix.

More examples

Sending to Luxembourg from abroad

Write the address exactly as it is used locally, then add the country name in capital English letters on the last line.

Tips and common mistakes

• Write the number first: 12, rue de la Gare.
• Use the L- prefix for international mail.
• Street names are usually in French.
• Many small villages have their own postcode.

Cantons of Luxembourg

Luxembourg has 12 cantons in our data. The canton is rarely required in a postal address, but forms and databases often store it separately.

Test data for Luxembourg

There is no widely reserved fictional phone range here, so the generator leaves phone numbers out. Generated addresses use real towns and postcode areas with invented streets and names, so they are safe for form testing, mockups and documentation.