Validate US ZIP codes

Open on Drupal.org →

Created on 24 April 2025, about 21 hours ago

Problem/Motivation

Site owners expect ZIP Codes to be validated, to stop people from entering junk.

Steps to reproduce

Add an address field to an entity. Allow the postal code to be filled in. Select US as the country, enter gibberish in the ZIP code field, submit the form.

Expected behavior:
* The submission fails because the ZIP code does not validate.

Actual behavior:
* The submission succeeds because the ZIP code is not validated.

Proposed resolution

Add at least rudimentary ZIP code validation.
This may require improvements to the Addressing library.

Remaining tasks

Add postal code validation for US addresses.

User interface changes

The ZIP code would be validated for correct syntax when entering a US address.

API changes

TBD

Data model changes

TBD

✨ Feature request

Status

Active

Version

2.1

Component

User interface

Created by

🇺🇸United States DamienMcKenna NH, USA

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Comments & Activities

Issue created by @DamienMcKenna
Comment about 21 hours ago →
🇺🇸United States DamienMcKenna NH, USA
Related issue: https://github.com/commerceguys/addressing/issues/227
Comment about 21 hours ago →
🇺🇸United States DamienMcKenna NH, USA
Disclaimer: I'm using the address field via a Webform element, so I'm not discounting the possibility that there's a problem with Webform.
Comment about 21 hours ago →
🇺🇸United States DamienMcKenna NH, USA
Comment about 20 hours ago →
🇷🇸Serbia bojanz
The underlying problem is #2888152: Address validation doesn't run for form elements, only entity fields → .

Unfortunately, it never got fixed while Address was more actively developed, so Webform would need to do its own workarond.
Comment about 20 hours ago →
🇺🇸United States DamienMcKenna NH, USA
Thanks for mentioning that issue.

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