Postcode Delivery Zones for OpenCart — delivery zones by postcode, minimum order and delivery windows

Postcode Delivery Zones for OpenCart is your store’s own delivery by postcode. You define zones as lists of postcodes (exact, prefixes, ranges, exclusions), and every zone has its own delivery fee, free-delivery threshold and minimum order value. The customer learns whether you deliver to them already on the product page, and at checkout the shipping method only appears for postcodes you serve. Below the zone minimum the module says plainly how much is missing.

The core version is free. Up to three zones with a fee, “free from” and a minimum, and a “Do we deliver to you?” check on the product page and in the cart — no license and no time limit. Pro adds delivery windows the customer picks at checkout (the date and time are saved in the order), window capacity, cut-off time, preparation days, closed dates, unlimited zones and CSV import and export.

What the admin gets

• Postcode rules — one per line: 10115 exact, 10* prefix, 10115-10999 range, !10117 exclusion. Spaces are ignored; UK and Polish formats are recognised too.
• A postcode tester right on the zones tab: enter a postcode and see which zone takes it.
• Amount basis for the minimum and the threshold — products subtotal or order total.
• CSV (Pro) — import rules (zones are matched by name, missing ones are created; append or replace) and export with a BOM so Excel opens Cyrillic and umlauts correctly.

How it works, step by step

1. You create a “Centre” zone: Germany, 10115-10179 and !10117, delivery 4.90, free from 50, minimum 25.
2. A customer enters 10115 on the product page — “Yes, we deliver to 10115 (Centre). Delivery 4.90 (free from 50). Minimum order 25”.
3. 10117 — “Sorry, we don’t deliver to this postcode”: the exclusion from the range works.
4. At checkout with a cart of 20 the method shows “add 5 more”, with 30 — a fee of 4.90, from 50 — free.
5. Pro: the customer picks “Centre (Tue 22/09, 10:00–14:00)”. If the window capacity is 1, the next customer won’t see that window.

Under the hood

• One logic everywhere: the widget, the cart and the checkout shipping method all ask the same service, so the widget never promises what the checkout won’t give.
• Its own zones table instead of hundreds of settings rows; the table stays when the extension is uninstalled, so an update or reinstall never wipes your postcode lists.
• Window capacity is counted from placed orders with that window.
• Time zone for the cut-off and window dates is a setting; the server time zone by default.
• A Pro gate that doesn’t brick anything: when the trial ends, the first three zones keep working, the rest and the windows are kept until a license.

Installation

1. OpenCart 4.x: Extensions → Installer → Upload cc_pdzones.ocmod.zip → “Install” in the list.
2. OpenCart 3.x: Extensions → Installer → Upload cc_pdzones-oc3-1.0.1.ocmod.zip, then Modifications → Refresh.
3. OpenCart 2.3: the stock 2.3 installer copies files only over FTP. Without FTP, upload the contents of the upload/ folder from cc_pdzones-oc2-1.0.1.ocmod.zip to the store root.
4. Extensions → Extensions → Shipping → Postcode Delivery Zones → “Install”, then “Edit”.
5. “General” tab: status “Enabled”. “Zones” tab: add a zone, postcodes, fee and minimum, save. Check a postcode with the tester.
6. For Pro: the “License” tab — paste the key from the e-mail you get after payment, or start the 7-day trial.