Sierra Leone
ISO 3166-1 country codes and official ISO 3166-2 subdivisions for Sierra Leone. Use them in forms, validation, and CountriesDB integrations.
About Sierra Leone codes
Need Sierra Leone (SL) for a checkout form, shipping zone, or backend validation? This page summarizes the ISO 3166-1 country codes and official subdivisions developers use with CountriesDB.
This guide lists 5 official ISO 3166-2 subdivisions for Sierra Leone. These are the same codes CountriesDB serves through widgets and the Backend Data API.
For production, use the CountriesDB country/subdivision widget or fetch Sierra Leone from the Data API and validate codes server-side instead of copying values from this page.
ISO codes
Official subdivisions (5)
Official ISO 3166-2 codes for Sierra Leone. Use these values in region/state selects and server-side validation, not informal or marketing region names.
| Code | Name | Type |
|---|---|---|
| SL-E | Eastern | province |
| SL-NW | North Western | province |
| SL-N | Northern | province |
| SL-S | Southern | province |
| SL-W | Western Area (Freetown) | area |
Frequently asked questions
- What is the ISO 3166-1 code for Sierra Leone?
- Sierra Leone uses ISO 3166-1 alpha-2 SL, alpha-3 SLE, and numeric 694. These codes show up in forms, shipping, banking, and APIs.
- How many official ISO 3166-2 subdivisions does Sierra Leone have?
- CountriesDB lists 5 official ISO 3166-2 subdivisions for Sierra Leone (states, provinces, regions, or equivalent). Use them when you validate region selects and shipping zones.
- How do I use Sierra Leone country and subdivision data in a form?
- Use the CountriesDB widget or Data API to fill country and subdivision selects for Sierra Leone, then validate submitted codes with the Validation API so alpha-2 and ISO 3166-2 values stay consistent.
Use Sierra Leone in your app
Add CountriesDB country and subdivision selects with the widget docs, or call the Backend Data API for Sierra Leone (SL) and validate submissions with the Validation API. Guides stay in sync with the same dataset your project keys already use. widget docs.