Address requirements POST Luxembourg (Luxembourg)

Letters sent to Luxembourg, once printed, are forwarded to POST Luxembourg for delivery. From this point onwards, further responsibility lies with POST Luxembourg. To ensure that your letters can be processed smoothly and for the agreed prices by POST Luxembourg, it is important that the recipient addresses comply with specific requirements.

In this article, we have summarised the most important address requirements of POST Luxembourg for you.

In order to provide our customers with the best possible support in complying with these requirements, Pingen checks the recipient address for additional requirements for letters to Luxembourg since December 1st 2025. Learn more about the address checks of Pingen

If there are problems processing the recipient's address, POST Luxembourg may reject the letter or only deliver it for a surcharge. In such cases, no reimbursement will be made correct addressing is the sender’s responsibility and the costs cover the additional processing effort. To ensure that the address meets the postal address requirements, we recommend sending a test letter via Pingen and verifying successful delivery. In this way, potential problems can be recognised and rectified at an early stage to ensure smooth delivery.

Address requirements POST Luxembourg:

Address structure

To ensure that the recipient's address can be processed by bpost, the following order must be respected:

• Salutation (optional), recipient name
• Further recipient designations (optional)
• Company name (optional)
• Street and house number with box number (optional) or PO box and PO box number in one line in this order. Additional information such as building, entrance, floor and other details must be provided on the address line above.
• Postcode line (ideally starting) with the capital letter ‘L-’ including hyphen, as well as 4-digit postcode and destination in one line in this order, without a comma between the postcode and destination.

The following link allows you to check postcodes directly with POST Luxembourg and display them in the correct spelling: Find a postcode

Usually accepted by POST Luxembourg:

Usually not accepted by POST Luxembourg:

Fonts

POST Luxembourg defines specific information regarding font formatting:

Font size (height of verse)

• ‍Minimum: 8 pt
• Maximum: 12 pt
• Recommended font size: 10 pt to 12 pt in "regular" (normal) font style

Font & colour

‍For the recipient's address to be properly read, a clear font with an easily readable font size is mandatory.

• Recommended fonts: Arial, Century, Courier, Mangal, Raavi, Tahoma, Tunga, Verdana
• Uniform font
• Font colour: Black
• No italics or decorative fonts
• No serif fonts
• No negative or bold fonts
• No fonts with connected letters
• No 3D or shaded fonts

 Usually not accepted by POST Luxembourg:

Further details on the design:

POST Luxembourg specifies further requirements for address design:

• Maximum six address lines
• The address must be left-aligned
• The destination should ideally be written in capital letters.
• No special characters such as inverted commas, brackets, exclamation and question marks or ‘/’, ‘#’, ‘&’, ‘§’, ‘n°’, ‘nr’, etc.)
• No lines, underlining or framing in the address
• No blank lines between the address lines
• Neither postcode nor city must be underlined or blocked out.
• Use of Latin characters and Arabic numerals only.
• If the recipient has a post office box or a large recipient postcode, it is not necessary to provide the additional geographical address
• For less common numbering systems, such as ‘6/8 rue des Bains’, only the first digit is taken into account, i.e. ‘6 rue des Bains’

Usually not accepted by POST Luxembourg:

Detailed documentation of the requirements by POST Luxembourg can be found here:

Address verification by Pingen (since December 1st 2025)

To help you meet the requirements of POST Luxembourg, Pingen will check the recipient address for compliance with additional requirements from December 1st 2025 for letters to Luxembourg.

If Pingen detects that a document does not comply with the address requirements, it will receive the status "Action required" after upload. The "cover page feature" enables you to correct the recipient's address directly via Pingen. This feature automatically adds a new page in front of the document. This allows the address to be re-entered in compliance with the address requirements and placed on the cover page accordingly.

The following requirements will be reviewed in Pingen from December 1st 2025:

Prohibited content in the postcode line

In the address line with the postcode and the city, the postcode must appear before the city. In addition, there must be no characters (such as a comma or hyphen) between the postcode and the city. Both pieces of information must be separated by a space. Pingen checks whether the order is correct and whether there is a space after the postcode.

Please ensure that the line with the postcode only contains the postcode and the city and that they are separated by a space. For example, L-2998 LUXEMBOURG or 2998 Luxembourg (and not "L-2998, LUXEMBOURG" or "LUXEMBOURG L-2998").

Postcode does not have 4 digits 

In Luxembourg, postcodes that are not 4-digit are considered invalid. If a recipient address has a postcode with fewer or more than 4 digits respectively no valid country designation, it will be rejected by Pingen. Pingen checks whether the last or second-last address line contains a 4-digit postcode. 

Please ensure that the postcode is a continuous 4-digit number and (ideally) begins with the capital letter "L-" and a hyphen, or that international letters have a supportsupported countryed country name is stated on the last address line. For example, L-9874 REMICH or 9874 REMICH (and not "L-987 REMICH" or "L-9 874 REMICH" or "FR" or other information).

Unsupported ISO country code

The spelling LU-2998 Luxembourg (i.e. ISO2 country code before the postcode) has not been supported by POST Luxembourg for several years. For this reason, Pingen checks whether there is an ISO2 country code (such as "LU-") on the line with the postcode.

Please ensure that the country name is on the last line of the address and that the address line with the postcode does not contain a country name. For example, L-2998 LUXEMBOURG (and not "LU-2998 LUXEMBOURG").

City/town missing after postcode

POST Luxembourg requires that the city or town name appears immediately after the postal code. For this reason, Pingen checks whether the address line with the postal code also includes a city/town name (such as "LUXEMBOURG," "REMICH," etc.).

Please ensure that on the address line with the postal code also a city or town name is present. For example, L-9874 REMICH (and not "L-9874”).

Country designation on the postcode line

POST Luxembourg requires that the country name is the only content on the final address line. For this reason, Pingen checks whether there is a country designation (such as "LUXEMBOURG," "LUXEMBURG," "LËTZEBUERG") on the line with the postal code.

Please ensure that the country name is on the last address line and that the address line with the postcode does not have a country name. For example, L-L9874 REMICH or 9874 REMICH (and not " L-9874 REMICH,  LUXEMBOURG" or " L-9874 REMICH (LUXEMBOURG)").

Country designation on the last address line

POST Luxembourg specifies that for local letters to Luxembourg, the country should not be stated in the address. Pingen checks, whether Luxembourg is stated as the destination country for local letters.

For Organisations with the default recipient country Luxembourg, please ensure that there is no country name (such as Luxembourg, Luxemburg or Lëtzebuerg) on the last address line.

Invalid address structure

When sending letters to Luxembourg, no empty lines (or lines without content) are allowed between the different address lines. Furthermore no address line may exist between the address line with the postcode/city and the address line with the country name. Pingen checks, wether any unsupported address line follows after the address line with the postcode/city.

Please ensure the address does not contain any empty lines, the address line with the postcode/city is only followed by the (optional) country name and the order of the address lines is correct. For example no information is between the (optional) country name and the address line with the postcode/city.

Distracting elements in the address area

POST Luxembourg specifies that only the postal address may be included in the address area. Pingen checks whether there is any additional information in the address area below the address.

Please ensure that no further details follow below the postal address and that there is no additional content in the address area.

Important:

For technical reasons, Pingen cannot carry out a complete verification of the requirements by POST Luxembourg. The address check by Pingen serves solely to help identify various problems before sending the letter. However, it is the sender's responsibility to ensure that letters sent to Luxembourg via Pingen comply with POST Luxembourg regulations. Any additional expenses due to incorrect addressing will be charged by Pingen.

Note: The illustrations in this article are not to scale.