Thailand's cities at a glance
Dots sized by population · Bangkok in orange
Thailand has 1 city with more than a million inhabitants and 21 with more than 100,000 (city-proper figures). The largest is Bangkok with 5,104,476 people, followed by Samut Prakan (388,920) and Mueang Nonthaburi (254,375). The three largest cities together hold about 8% of the country's 71.5 million people.
The capital, Bangkok, is also the largest city.
By region, the most large cities are in Nonthaburi (3), Songkhla (2), Prachin Buri (2).
Country-level figures — live population, births and deaths, growth, density and history — are on the Thailand population page; provinces, terrain, rivers and society maps are in the Thailand atlas.
Thailand cities by population
| # | City | Region | Population | Share of Thailand |
|---|---|---|---|---|
| 1 | BangkokCapital | Bangkok | 5,104,476 | 7.1% |
| 2 | Samut Prakan | Samut Prakan | 388,920 | 0.5% |
| 3 | Mueang Nonthaburi | Nonthaburi | 254,375 | 0.4% |
| 4 | Chon Buri | Chon Buri | 219,164 | 0.3% |
| 5 | Hat Yai | Songkhla | 191,696 | 0.3% |
| 6 | Pak Kret | Nonthaburi | 190,272 | 0.3% |
| 7 | Lampang | Lampang | 156,139 | 0.2% |
| 8 | Kabin Buri | Prachin Buri | 140,056 | 0.2% |
| 9 | Surat Thani | Surat Thani | 132,040 | 0.2% |
| 10 | Udon Thani | Udon Thani | 130,531 | 0.2% |
| 11 | Chiang Mai | Chiang Mai | 127,240 | 0.2% |
| 12 | Nakhon Ratchasima | Nakhon Ratchasima | 126,391 | 0.2% |
| 13 | Hua Hin | Prachuap Khiri Khan | 126,355 | 0.2% |
| 14 | Ubon Ratchathani | Ubon Ratchathani | 122,533 | 0.2% |
| 15 | Ban I Chang | Ratchaburi | 119,858 | 0.2% |
| 16 | Khlong Luang | Pathum Thani | 118,551 | 0.2% |
| 17 | Nakhon Pathom | Nakhon Pathom | 117,927 | 0.2% |
| 18 | Khon Kaen | Khon Kaen | 114,459 | 0.2% |
| 19 | Rayong | Rayong | 106,737 | 0.1% |
| 20 | Nakhon Si Thammarat | Nakhon Si Thammarat | 102,152 | 0.1% |
| 21 | Si Maha Phot | Prachin Buri | 100,563 | 0.1% |
| 22 | Chanthaburi | Chanthaburi | 99,819 | 0.1% |
| 23 | Yala | Yala | 93,558 | 0.1% |
| 24 | Ratchaburi | Ratchaburi | 92,448 | 0.1% |
| 25 | Ban Mai | Songkhla | 86,899 | 0.1% |
| 26 | Nakhon Sawan | Nakhon Sawan | 82,305 | 0.1% |
| 27 | Phuket | Phuket | 79,308 | 0.1% |
| 28 | Nong Prue | Kanchanaburi | 79,258 | 0.1% |
| 29 | Chiang Rai | Chiang Rai | 78,756 | 0.1% |
| 30 | Bang Kruai | Nonthaburi | 78,305 | 0.1% |
Cities with 300,000 or more people link to their own page. The list keeps every city of 100,000+ and at least the 30 largest places of the country.
Frequently asked questions
What is the largest city in Thailand?
Bangkok, with about 5,104,476 inhabitants (city proper).
What is the capital of Thailand?
Bangkok — population 5,104,476, the largest city in the country.
How many cities in Thailand have over one million people?
1: Bangkok.
Are these metropolitan-area populations?
No. They are city-proper figures (the administrative city) from GeoNames, based on the latest census or official estimate. Metropolitan areas, which include suburbs and satellite towns, are larger — often several times larger for the biggest cities.
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VietnamCite or link to this page
Glostats. (2026). Largest Cities in Thailand 2026: Population Ranking. Retrieved October 20, 2026, from https://glostats.com/cities/thailand/<a href="https://glostats.com/cities/thailand/">Largest Cities in Thailand 2026: Population Ranking</a> — GlostatsFigures on this page may be quoted, charted or republished as long as the page is credited with a link. Terms · Download the data as CSV · Embed a live counter.
City populations are GeoNames figures (CC BY 4.0): the latest official census or estimate for the city proper — the municipality, not the wider metropolitan area — so they can differ from "metro area" numbers you see elsewhere. Country populations are live Glostats estimates from the UN World Population Prospects. Page generated 2026-10-20. More about our data.