WooCommerce ships Sri Lanka with no districts and the State field hidden. This plugin makes checkout work the way Sri Lankan addresses actually work: 101, Main Street, Negombo, Gampaha, 11500, Sri Lanka.
- Adds all 25 districts as a required District dropdown, keyed by ISO 3166-2:LK codes so couriers and shipping plugins interoperate.
- Suggests cities for the selected district while the customer types — 288 verified cities across all 25 districts.
- Autofills the postal code when a known city is picked — still editable, and it never overwrites a code the customer typed themselves.
- Lets you build district-based shipping zones (WooCommerce → Settings → Shipping → Add zone → pick districts).
- Works on both the classic (shortcode) checkout and the block checkout.
Safety and design
- No external services. No data leaves your site, nothing is tracked, no account is needed.
- No AJAX endpoints, no database writes, no extra checkout fields — WooCommerce validates the district server-side automatically.
- Everything fails safe: without WooCommerce the plugin does nothing; with JavaScript blocked, the district dropdown still works and city/postcode are normal manual fields.
- Block-checkout updates go through WooCommerce’s official wp.data store API.
Data provenance
Every autofilled postal code was verified against Sri Lanka Post and independent directories (July 2026). Cities whose codes could not be fully verified are left out — for those, the city field simply works as a plain text box.