Block restricted postal codes.
Control your shipping zones.
Ultimate Postal Code Blocker for Shopify automatically prevents orders from areas you wish to exclude, cutting down on potential shipping headaches and risk.

Why your Shopify business should restrict certain postal codes
Some areas might be outside of your shipping zones or pose elevated risk for lost, stolen, or returned packages.
Blocking certain postal codes can protect your business from high return rates or unserviceable locations.
It helps streamline your shipping process and ensures orders only come from areas you can reliably service.
Block postal codes, streamline operations.

Save on Shipping
Reduce shipping errors and the cost of returned packages by only shipping to serviceable postal codes.

Improve Customer Experience
Prevent customers from ordering products that you can’t effectively deliver to, avoiding disappointment and extra support queries.

Stay in Control
Easily manage and modify your postal code rules to reflect business strategy, expansions, or changes in carrier coverage.
Not every business can ship to every area. It's crucial to set realistic boundaries on where you deliver.
We created Ultimate Postal Code Blocker for Shopify to help you automatically enforce these boundaries and reduce operational headaches.
It's a must-have for merchants who want efficient shipping, fewer returns, and happier customers.
Whether you're scaling your store or just starting out, the Ultimate Postal Code Blocker gives you peace of mind and control over your shipping zones.

Get started instantly.
1. Install the Ultimate Postal Code Blocker from the Shopify App Store.
2. Configure which postal or ZIP codes you want to block.
3. Your store will automatically reject orders from blocked regions.
It's straightforward. Click the button below to install now or read further instructions for a detailed walkthrough.
1. Does the app slow down checkout?
No, the checks are instantaneous, so your customers won’t experience any noticeable delays at checkout.
2. Can I block multiple postal codes or entire ranges?
Yes, you can specify multiple codes or a range. The app is flexible so you can tailor it to your shipping policies.
3. What if I want to remove or change a blocked postal code?
Simply go to your app settings and update the list of blocked codes at any time. The change is applied instantly.
4. Will customers know why they can’t ship to a blocked location?
Yes, you can customize the error message shown at checkout, so customers are clearly informed if they attempt to ship to a restricted postal code.