# Restrict Shopify Checkout by ZIP or Postal Code

URL: https://geofraudshield.com/blog/restrict-checkout-by-zip-code-shopify
Published: 2026-10-06
Reading time: 7 min read
Category: Tutorial
Author: Robert John, Founder & CEO at Blockly (https://geofraudshield.com/about#robert-john)
Publisher: Blockly (https://geofraudshield.com)

## TL;DR

Only deliver to certain areas, or need to exclude a few? Learn how to restrict Shopify checkout by ZIP or postal code with server-side rules, clear messages, and matching that handles real-world formats.

## Key points

- Local delivery. Your own drivers only cover certain neighborhoods.
- Perishables. Food, flowers, or chilled goods must arrive within a time window that only nearby areas can meet.
- Carrier coverage. A freight or white-glove partner only serves specific regions.
- Legal restrictions. Some products can't be sold or shipped to certain local jurisdictions.
- Cost control. Remote or island postal codes carry surcharges that make some orders unprofitable.
- Cart and Checkout Validation blocks checkout with an error when the shipping postal code is outside your rules.

## Questions this answers

- How does shopify work on Shopify?
- How does checkout customization work on Shopify?
- How does zip code work on Shopify?
- How does local delivery work on Shopify?
- How does shopify functions work on Shopify?

## Primary sources referenced

- Shopify Functions (Shopify developer docs): https://shopify.dev/docs/apps/build/functions

## Citation format

Blockly (2026). Restrict Shopify Checkout by ZIP or Postal Code. https://geofraudshield.com/blog/restrict-checkout-by-zip-code-shopify