Application Checkout Address Korean Website

Shopify Apps

Topic summary

A developer is building a Korean e-commerce site and needs to implement a postal code-based address lookup feature commonly used in South Korea. This functionality allows users to click a button on the checkout page, enter their postal code in a popup, and automatically populate their complete address.

Key Points:

  • The feature is standard on Korean websites (reference: thisisneverthat.com)
  • Multiple users expressed interest in the same solution
  • Common Korean address APIs mentioned: Kakao and Daum Address API

Solution Found:
SeoulCommerce developed and published an app specifically for this: Korean Address Lookup

Important Limitation:

  • The app only works on Shopify Plus stores due to Shopify’s checkout UI extensibility restrictions
  • Non-Plus stores cannot modify checkout pages in this way
  • Users hope Shopify will expand checkout customization access to all merchants in the future
Summarized with AI on November 6. AI used: claude-sonnet-4-5-20250929.
11

Hello !

It’s been a while since this was posted but did you find a solution ? I am searching for the same feature on my website.

Thanks in advance !