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GET
/
v1
/
regions
/
{id}
/
subregions
curl -X GET 'https://api.countrystatecity.in/v1/regions/3/subregions' \
  -H 'X-CSCAPI-KEY: YOUR_API_KEY'

[
  { "id": 14, "name": "Southern Asia", "region_id": 3 },
  { "id": 15, "name": "Eastern Asia", "region_id": 3 },
  { "id": 16, "name": "South-Eastern Asia", "region_id": 3 },
  { "id": 17, "name": "Western Asia", "region_id": 3 },
  { "id": 18, "name": "Central Asia", "region_id": 3 }
]

Documentation Index

Fetch the complete documentation index at: https://docs.countrystatecity.in/llms.txt

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Retrieve all subregions belonging to a specific region. For example, region “Asia” contains subregions like “Southern Asia”, “Eastern Asia”, etc.
Availability: Supporter plan and above.
Trim and order results: Add ?fields= to limit columns returned, or ?sort= to order the list. Both are available on Supporter+ plans. See the Field Filtering & Sorting guide for syntax and per-entity sortable fields.

​
Authentication

​
X-CSCAPI-KEY
string
required
Your API key for authentication

​
Path Parameters

​
id
integer
required
Numeric region ID (e.g., 3 for Asia)

​
Query Parameters

​
q
string
Search filter on subregion name. Min 2 characters. Requires Supporter+ plan.

​
Response

​
id
integer
Unique identifier for the subregion
​
name
string
Subregion name
​
region_id
integer
Parent region ID
curl -X GET 'https://api.countrystatecity.in/v1/regions/3/subregions' \
  -H 'X-CSCAPI-KEY: YOUR_API_KEY'

[
  { "id": 14, "name": "Southern Asia", "region_id": 3 },
  { "id": 15, "name": "Eastern Asia", "region_id": 3 },
  { "id": 16, "name": "South-Eastern Asia", "region_id": 3 },
  { "id": 17, "name": "Western Asia", "region_id": 3 },
  { "id": 18, "name": "Central Asia", "region_id": 3 }
]