🇹🇭 Cities in Thailand — API & JSON data

Geomelon tracks 350 cities in Thailand, spread across 77 regions. Bangkok is the largest, with a population of 5,676,648. City names are available in 7 languages through the API below.

Data updated: 2026-07-14

Live demo

Type to search Thailand cities…

Top 10 cities by population

City	Region	Population
Bangkok	—	5,676,648
Chiang Mai	Chiang Mai	1,198,000
Phrae	—	437,350
Nonthaburi	Nonthaburi	255,671
Pak Kret	Nonthaburi	184,501
Chaophraya Surasak	Chon Buri	160,582
Hat Yai	Songkhla	159,130
Surat Thani	Surat Thani	130,703
Udon Thani	Udon Thani	130,274
Nakhon Ratchasima	Nakhon Ratchasima	128,217

Sample API response

GET /cities/search?countryCode=th&sort=population_desc&limit=3

[
  {
    "id": "225e1638-96f3-4a75-aefe-ee6fddf4d043",
    "name": "Bangkok",
    "population": 5676648,
    "countryName": "Thailand",
    "countryCode": "TH",
    "countryEmoji": "🇹🇭",
    "regionName": null
  },
  {
    "id": "369d7681-885a-4e7a-adc1-a457d3a46c70",
    "name": "Chiang Mai",
    "population": 1198000,
    "countryName": "Thailand",
    "countryCode": "TH",
    "countryEmoji": "🇹🇭",
    "regionName": "Chiang Mai"
  },
  {
    "id": "c0f0375c-eb29-4bbb-ab98-97bf73ed6597",
    "name": "Phrae",
    "population": 437350,
    "countryName": "Thailand",
    "countryCode": "TH",
    "countryEmoji": "🇹🇭",
    "regionName": null
  }
]

Try it

curl --request GET \
  --url 'https://geomelon.p.rapidapi.com/cities/search?countryCode=th&sort=population_desc&limit=10' \
  --header 'x-rapidapi-host: geomelon.p.rapidapi.com' \
  --header 'x-rapidapi-key: YOUR_API_KEY'

const res = await fetch(
  'https://geomelon.p.rapidapi.com/cities/search?countryCode=th&sort=population_desc&limit=10',
  {
    headers: {
      'x-rapidapi-host': 'geomelon.p.rapidapi.com',
      'x-rapidapi-key': 'YOUR_API_KEY',
    },
  },
)
const cities = await res.json()

Multilingual city names

City names in Thailand are available in 7 languages.

en: Bangkok
fr: Bangkok
de: Bangkok

Free dataset

Prefer a static file? Download 259 Thailand cities as JSON (38 KB, no API key) from the Thailand cities dataset page.

FAQ

How many cities in Thailand does the API return?

Geomelon currently has 350 cities in Thailand across 77 regions. Results are paginated, up to 100 per request.

Is there a free tier?

Yes. RapidAPI's free tier covers a fixed number of requests per month with no credit card required. There is also a free, no-key city-autocomplete endpoint (the demo above) for prefix search.

Can I get Thailand city names in other languages?

Yes — city names in Thailand are available in 7 languages. Pass the languages you want via the preferredLanguages parameter, most-preferred first.

Do I need an API key?

The main search and lookup endpoints require a free RapidAPI key. The prefix-search autocomplete endpoint used in the demo above is public and does not require a key.

Try free on RapidAPI