> ## Documentation Index
> Fetch the complete documentation index at: https://docs.scrapebadger.com/llms.txt
> Use this file to discover all available pages before exploring further.

# List Departments

> List Leboncoin's French departments, optionally filtered by region.

Returns the reference list of French departments used by Leboncoin. Use a returned `id` with the [`department_id`](/api-reference/endpoint/leboncoin/search-ads) parameter on search.

## Query Parameters

<ParamField query="region_id" type="string">
  Restrict the list to departments within a single region. Use [`/v1/leboncoin/regions`](/api-reference/endpoint/leboncoin/list-regions) to look up region ids. Omit to return all departments.
</ParamField>

## Response

<ResponseField name="departments" type="array">
  Array of departments.

  <Expandable title="Department object">
    <ResponseField name="id" type="string">Leboncoin department id (e.g. `75`).</ResponseField>
    <ResponseField name="name" type="string">Department name (e.g. `Paris`).</ResponseField>
    <ResponseField name="region_id" type="string">The region this department belongs to.</ResponseField>
  </Expandable>
</ResponseField>

### Example Response

```json theme={null}
{
  "departments": [
    { "id": "75", "name": "Paris", "region_id": "22" },
    { "id": "77", "name": "Seine-et-Marne", "region_id": "22" },
    { "id": "92", "name": "Hauts-de-Seine", "region_id": "22" },
    { "id": "93", "name": "Seine-Saint-Denis", "region_id": "22" }
  ]
}
```

<Note>
  Listing departments is a **free** reference endpoint (0 credits).
</Note>