Thailand Population, Main Cities and Geography

By | January 27, 2023

Thailand: population, cities


According to Countryaah website, Thailand has about 69.5 million residents.

Ethnic composition

75% Thais, 14% Chinese; Minorities: hill tribes, Khmer, Laotians, Malays, Moken, Indians and whites.


affiliation 94% Buddhists, 4% Muslims, the rest are predominantly Hindus and Christians.


languages The official language of Thailand is Thai.

Capital, other cities


The capital of Thailand is Bangkok, with around 12 million residents (Greater Bangkok). According to Abbreviation Finder, THA stands for Thailand in English. Click to see other meanings of this 3-letter acronym.

Other cities with a population over 30,000 are:

  • Ayutthaya, with about 70,000 residents
  • Amnat Charoen, with around 35,000 residents
  • Bang Pa In, with about 75,000 residents
  • Buriram, with about 35,000 residents
  • Chachoengsao, with about 50,000 residents
  • Chiang Mai, with an estimated 350,000 residents
  • Chainat, with about 35,000 residents
  • Chaiya, with about 48,000 residents
  • Chaiyaphum, with about 38,000 residents
  • Chiang Mai, with an estimated 350,000 residents
  • Chanthaburi, with around 45,000 residents
  • Chonburi, with approx. 195,000 residents
  • Chumphon, with approx. 53,000 residents
  • Hua Hin, with about 70,000 residents
  • Kaeng Khoi, with approx. 85,000 residents
  • Kalasin, with approx. 49,000 residents
  • Kamphaeng Phet, with about 40,000 residents
  • Kanchanaburi, with about 56,000 residents
  • Khon Kaen, with approx. 145,000 residents
  • Lampang, with about 65,000 residents
  • Lamphu, with around 35,000 residents
  • Loei, with about 33,000 residents
  • Lopburi, with around 58,000 residents
  • Maha Sarakham, with about 43,000 residents
  • Mukdahan, with around 100,000 residents
  • Nakhon Phanom, with around 43,000 residents
  • Nakhon Ratchasima, with around 225,000 residents
  • Nakhon Sawan, with about 130,000 residents
  • Nakhon Si Thammarat, with approx. 95,000 residents
  • Narathiwat, with about 45,000 residents
  • Nong Khai, with about 38,000 residents
  • Nonthaburi, with about 58,000 residents
  • Pattani, around 57,000 residents
  • Pattaya, with around 70,000 residents
  • Phattalung, with about 33,000 residents
  • Phayao, with about 32,000 residents
  • Phetchaburi, with approx. 53,000 residents
  • Phitsanulokmit, approx. 125,000 residents
  • Phuket, with about 290,000 residents
  • Ratchaburi, with around 50,000 residents
  • Rayong, with approx. 122,000 residents
  • Roi Et, with about 38,000 residents
  • Sakon Nakhon, with about 78,000 residents
  • Samut Prakan, with about 400,000 residents
  • Samut Sakhon, with approx. 73,000 residents
  • Samut Songkhram, with about 38,000 residents
  • Saraburi, with around 72,000 residents
  • Sukhothai, with about 78,000 residents
  • Suphanburi, with about 32,000 residents
  • Surat Thani, with about 115,000 residents
  • Surin, with about 45,000 residents
  • Trang, with around 70,000 residents
  • Ubon Ratchathani, with around 108,000 residents
  • Udon-Thani, with approx. 112,000 residents
  • Uttaradit, with about 37,000 residents
  • Yala, with approx. 65,000 residents


New York (8 million) in the USA,

Sao Paulo (> 17 million) in Brazil,

Berlin (3.4 million) in Germany,

London (7.2 million) in England and Great Britain,

Beijing (City 6 million) in China,

Mexico City in Mexico, the most populous city on earth (over 20 million),

Tokyo (11.8 million) in Japan.

Thailand: geography, map

Thailand is located in Southeast Asia, in back India. It is bordered by Laos to the east, Cambodia to the southeast, the Gulf of Thailand and Malaysia to the south, the Andaman Sea to the southwest and Myanmar (Burma) to the west and north. Check topmbadirectory for politics, flags, famous people, animals and plants of Thailand.

The country covers an area of 513,115 km².

The core area of the country is the Menam Basin, especially the 250 to 300 km long alluvial plain surrounded by hill country and up to 100 km wide on the coast.

It towers above sea level by only a few meters (Ayutthaya 4 m, Bangkok 2 m) and is regularly flooded during the rainy season. To the west of the Menam Basin, 1,500 to 2,500 m high mountain ranges extend and form a natural border with Myanmar. The mountain range continues south on the Malay Peninsula. The Khorat Plateau is located in the northeast of Thailand.

National borders, coasts

Thailand borders four states:

  • to Cambodiawith a length of around 803 km
  • on Laoswith a length of around 1,754 km
  • on Malaysiawith a length of around 506 km
  • to Myanmar(Burma) with a length of around 1,800 km.

Thailand borders the Gulf of Thailand and the Andaman Sea. Its total coastline is around 3,219 km. On its coasts, the country has coral areas with an area of around 240 km², which are now considered endangered.

Tidal range

In Phuket, the mean tidal range is around 2 m.

For detailed explanations of ebb and flow, see Tides, Ebb and Flow.


The world’s highest tidal range can be found in the Bay of Fundy in Canada, where it is up to 16 meters, and at spring tide even over 20 meters. The Bay of Fundy is located on the Atlantic between the Canadian provinces of New Brunswick and Nova Scotia, which is called Nova Scotia in German and whose capital is Halifax.

On the German North Sea coast it varies between one and three meters. In the western Baltic Sea, on the other hand, the tidal range is only 0.3 meters, while it is barely noticeable in the eastern Baltic Sea.

Longitude and latitude

Thailand extends over the following geographical latitude (abbreviation Δφ) and geographical longitude (abbreviation Δλ):

Δφ = from 6 ° to 20 ° 30 ‘north latitude Δλ = from 97 ° 30′ to 105 ° 45 ‘east longitude

You can find detailed information on this subject under Longitude and Latitude.

Legal time

For Thailand, the following value applies to Central European Time (CET), i.e. the time (without summer time) in Germany, Austria and Switzerland. A minus sign means that it is earlier there and a plus sign that it is later than after CET:

Δt (CET) = + 6 h

Further and detailed explanations of the time can be found under Time zones, time.

Highest point of the sun in Bangkok

Bangkok lies at a northern latitude of around φ = 14 °. When the declination δ of the sun reaches the value of 14 ° north and thus the image point of the sun is exactly above the city, the sun is perpendicular there. This happens twice a year, 37 days before June 21st and 37 days after June 21st.

If the image point of the sun and thus the declination δ is north of the latitude of Bangkok, the sun is not there at noon in the south, as in our latitudes, but in the north. The sun then moves from east to north to west, where, like us, it sets.


The highest mountain in Thailand is Doi Inthanon, with a height of 2,565 m. It is located in the southwest of Chiang Mai in the national park of the same name.

Other high mountains are:

  • Doi Pha Ham Pokwith a height of 2,297 m
  • Doi Luangwith a height of 2,195 m
  • Doi Sithepowith a height of 2,185 m
  • Doi Pha Chowith a height of 2,024 m



The longest river in Thailand is the Mekong, with a total length of 4,350 km. It rises on Mount Guozongmucha, Qinghai in China, then flows through Myanmar, Laos, Thailand, Cambodia to flow into the South China Sea in the south of Vietnam.Other

rivers in the country are:

  • Chao Phrayawith a length of 375 km. It has its origin in the confluence of the Nan and Ping rivers in Nakhon Sawan. It flows into the Gulf of Thailand.At the end of October 2011, the river caused the strongest flooding in Bangkok in over 60 years.
  • Munwith a length of 673 km
  • Yomwith a length of 550 km
  • Pasakwith a length of 510 km
  • Saluenwith a length of 2,980 km. The river has its source in the highlands of Tibet in the People’s Republic of China. In its lower reaches it forms the border between Myanmar and Thailand and finally flows into the Andaman Sea at Mawlamyine in Myanmar – a side sea of the Indian Ocean.
  • Wangwith a length of km


The largest lake in the country is the Songkhla, with an area of 1,040 km².

Other larger lakes are:

  • Nong Hanwith an area of 32 km²
  • Phayao Lakewith an area of 2.3 km²
  • Nong Suangwith an area of 18.05 km²
  • Nong Yongwith an area of 18.22 km²


Thailand borders the Gulf of Thailand and the Andaman Sea.

  • Phuket, with an area of 543 km²
  • Koh Chang, the elephant island, with an area of 292 km²
  • Koh Samui, with an area of 247 km²
  • Koh Phangan, with an area of 168 km²
  • Phi Phi Islands, together with other islands, form the 390 km² Hat Noppharat Thara Marine National Park. In the tsunami on December 26, 2004, large parts of the islands’ infrastructure were destroyed and well over 1,000 people were killed.
  • Koh Tao, with an area of about 21 km²
  • Ko Samet, with an area of approx. 15 km²

Andaman Sea, Gulf of Thailand

Andaman Sea

The Andaman Sea – also Andaman Sea – is a marginal sea of the Indian Ocean. The Andaman Sea extends roughly from the Irrawaddy river delta in Myanmar in the north over a length of around 1,200 km to the start of the Strait of Malacca. In the west it is bounded by the Cocos Islands, the Andamans and the Nicobar Islands. It covers an area of around km² with a maximum depth of around 4,180 m. The water temperature on the surface of the sea fluctuates between 27.5 °C and 30 °C.

The Andaman Sea became famous not least because of the Tsuma of December 26, 2004, which resulted in numerous deaths in Thailand, Malaysia, the offshore western islands (Andamans and Nicobar Islands) and Sumatra. In all affected countries – also outside the Andaman Sea – together probably over 230,000.

Gulf of Thailand

The Gulf of Thailand is part of the South China Sea and thus a marginal sea of the Pacific Ocean. The golf covers an area of around 320,000 km² – with a maximum depth of around 80 m. The Gulf is bordered by Thailand to the west and north, Cambodia and Vietnam to the east and Malaysia to the southwest.

The main arm of the Chao Phraya and the narrower Tha Chin (near Samut Sakhon – about 35 km west of Bangkok) and the Mae Klong flow into the Gulf in the Bay of Bangkok. Another tributary to the gulf is the Tapi River in Bandon Bay near Surat Thani.

Thailand Population