Netherlands Complete Address Format Guide
Dutch postcodes use four digits, a space, and two uppercase letters. Together with a house number they can identify a small delivery segment; the letters I, O, and Q are generally excluded. Domestic numbers use a leading zero before area or mobile prefixes. International format removes it after +31; mobile numbers commonly begin 06 domestically. Surname particles such as de, van, van den, and van der are common. They must remain attached to the family name even when capitalization changes by context.
Standard format
Sophie de Vries / Daan van den Berg โ street โ NNNN AA
Example
1011 AB ยท +31 20 123 4567
Implementation and validation notes
Dutch postcodes use four digits, a space, and two uppercase letters. Together with a house number they can identify a small delivery segment; the letters I, O, and Q are generally excluded. Domestic numbers use a leading zero before area or mobile prefixes. International format removes it after +31; mobile numbers commonly begin 06 domestically. Surname particles such as de, van, van den, and van der are common. They must remain attached to the family name even when capitalization changes by context.
Validate required state, character set, length, and syntax on the client, then repeat validation on the server. Preserve the original input and normalize into a separate field; never truncate local scripts, compound names, or leading zeroes to fit a single Western assumption.
This guide describes common formats rather than an official registry and cannot enumerate every exception. Generated output is for testing only, not delivery, calling, identity verification, or real account activity.
Postal code
NNNN AA
Dutch postcodes use four digits, a space, and two uppercase letters. Together with a house number they can identify a small delivery segment; the letters I, O, and Q are generally excluded.
Phone
+31 area/subscriber
Domestic numbers use a leading zero before area or mobile prefixes. International format removes it after +31; mobile numbers commonly begin 06 domestically.
Names
Sophie de Vries / Daan van den Berg
Surname particles such as de, van, van den, and van der are common. They must remain attached to the family name even when capitalization changes by context.
Related resources
Frequently asked questions
What is the standard Netherlands address format?
A common representation is Sophie de Vries / Daan van den Berg โ street โ NNNN AA, for example 1011 AB ยท +31 20 123 4567. Dutch postcodes use four digits, a space, and two uppercase letters. Together with a house number they can identify a small delivery segment; the letters I, O, and Q are generally excluded. Domestic numbers use a leading zero before area or mobile prefixes. International format removes it after +31; mobile numbers commonly begin 06 domestically. Surname particles such as de, van, van den, and van der are common. They must remain attached to the family name even when capitalization changes by context.
How should Netherlands address test data be stored?
Store the original value as a string so leading zeroes, spaces, hyphens, accents, and local scripts are preserved. Use a separate normalized field for search.
Does correct formatting prove the data is real?
No. Syntax validation cannot prove an address is deliverable, a number is assigned, or a name belongs to a real person.