Bangkok, known in Thai as Krung Thep Maha Nakhon and colloquially as Krung Thep, is the capital and largest city of Thailand. The city occupies 1,568.7 square kilometres (605.7 sq mi) in the Chao Phraya River delta in central Thailand and has an estimated population of 9.1 million people as of 2024, 15.9% of the country's population. Over 17.4 million people (25% of Thailand's population) live within the surrounding Bangkok Metropolitan Region as of the 2021 estimate, making Bangkok a megacity and an extreme primate city, dwarfing Thailand's other urban centres in both size and importance to the national economy. Bangkok joined the UNESCO Global Network of Learning Cities in 2024.
Bangkok traces its roots to a small trading post during the Ayutthaya era in the 15th century, which eventually grew and became the site of two capital cities, Thonburi in 1767 and Rattanakosin in 1782. Bangkok was at the heart of the modernization of Siam during the late 19th century, as the country faced pressures from the West. The city was at the centre of the country's political struggles throughout the 20th century, as Siam—later renamed Thailand—abolished absolute monarchy, adopted constitutional rule, and underwent numerous coups and several uprisings. The city, which was incorporated as a special administrative area under the Bangkok Metropolitan Administration in 1972, grew rapidly during the 1960s through the 1980s and now exerts a significant impact on Thailand's politics, economy, education, media, and modern society.
The Asian investment boom in the 1980s and 1990s led many multinational corporations to locate their regional headquarters in Bangkok. The city is now a regional force in finance, business, and pop culture. It is an international hub for transport and health care, and has emerged as a centre for the arts, fashion, and entertainment. The city is known for its street life and cultural landmarks, as well as its red-light districts. The Grand Palace and Buddhist temples, including Wat Arun and Wat Pho, stand in contrast with other tourist attractions such as the nightlife scenes of Khaosan Road and Patpong. Bangkok is among the world's top tourist destinations and has been named the world's most visited city in several international rankings.
Bangkok's rapid growth, coupled with little urban planning, has resulted in a haphazard cityscape and inadequate infrastructure. Despite an extensive expressway network, an inadequate road network and substantial private car usage have led to chronic and crippling traffic congestion, which caused severe air pollution in the 1990s. The city has since turned to public transport to solve the problem, operating 10 urban rail lines and building other public transit; however, congestion remains a prevalent issue.
History
The history of Bangkok dates at least back to the early 15th century, to when it was a village on the west bank of the Chao Phraya River, under the rule of Ayutthaya. Because of its strategic location near the mouth of the river, the town gradually increased in importance. Bangkok initially served as a customs outpost with forts on both sides of the river, and was the site of a siege in 1688, in which the French were expelled from Siam. After the fall of Ayutthaya to the Burmese in 1767, the newly crowned King Taksin established his capital at the town, which became the base of the Thonburi Kingdom. In 1782, King Phutthayotfa Chulalok (Rama I) succeeded Taksin, moved the capital to the eastern bank's Rattanakosin Island, thus founding the Rattanakosin Kingdom. The City Pillar was erected on 21 April 1782, which is regarded as the date of the foundation of Bangkok as the capital.
Bangkok's economy gradually expanded through international trade, first with China, then with Western merchants returning in the early to mid-19th century. As the capital, Bangkok was the centre of Siam's modernization as it faced pressure from Western powers in the late 19th century. The reigns of Kings Mongkut (Rama IV, r. 1851–68) and Chulalongkorn (Rama V, r. 1868–1910) saw the introduction of the steam engine, printing press, rail transport and utilities infrastructure in the city, as well as formal education and healthcare. Bangkok became the centre stage for power struggles between the military and political elite as the country abolished absolute monarchy in 1932.
As Thailand allied with Japan in World War II, Bangkok was subjected to Allied bombing, but rapidly grew in the post-war period as a result of US aid and government-sponsored investment. Bangkok's role as a US military R&R destination boosted its tourism industry, as well as firmly establishing it as a sex tourism destination. Disproportionate urban development led to increasing income inequalities and migration from rural areas into Bangkok; its population surged from 1.8 million to 3 million in the 1960s.
Following the US withdrawal from Vietnam in 1973, Japanese businesses took over as leaders in investment, and the expansion of export-oriented manufacturing led to the growth of the financial market in Bangkok. Rapid growth of the city continued through the 1980s and early 1990s, until it was stalled by the 1997 Asian financial crisis. By then, many public and social issues had emerged, among them the strain on infrastructure reflected in the city's notorious traffic jams. Bangkok's role as the nation's political stage continues to be seen in strings of popular protests, from the student uprisings in 1973 and 1976, anti-military demonstrations in 1992, and frequent street protests since 2006, including those by groups opposing and supporting former prime minister Thaksin Shinawatra from 2006 to 2013, and a renewed student-led movement in 2020.
Administration of the city was first formalized by King Chulalongkorn in 1906, with the establishment of Monthon Krung Thep Phra Maha Nakhon (มณฑลกรุงเทพพระมหานคร) as a national subdivision. In 1915, the monthon was split into several provinces, the administrative boundaries of which have since further changed. The city in its current form was created in 1972 with the formation of the Bangkok Metropolitan Administration (BMA), following the merger of Phra Nakhon province on the eastern bank of the Chao Phraya and Thonburi province on the west during the previous year.
Name
The origin of the name Bangkok (บางกอก, pronounced in Thai as [bāːŋkɔ̀ːk] ⓘ) is unclear. Bang บาง is a Thai word meaning 'a village on a stream', and the name might have been derived from Bang Ko (บางเกาะ), ko เกาะ meaning 'island', stemming from the city's watery landscape. Another theory suggests that it is shortened from Bang Makok (บางมะกอก), makok มะกอก being the name of Elaeocarpus hygrophilus, a plant bearing olive-like fruit. This is supported by the former name of Wat Arun, a historic temple in the area, that used to be called Wat Makok.
Officially, the town was known as Thonburi Si Mahasamut (ธนบุรีศรีมหาสมุทร, from Pali and Sanskrit, literally 'city of treasures gracing the ocean') or Thonburi, according to the Ayutthaya Chronicles. Bangkok was likely a colloquial name, albeit one widely adopted by foreign visitors, who continued to use it to refer to the city even after the new capital's establishment.
When King Rama I established his new capital on the river's eastern bank, the city inherited Ayutthaya's ceremonial name, of which there were many variants, including Krung Thep Thawarawadi Si Ayutthaya (กรุงเทพทวารวดีศรีอยุธยา) and Krung Thep Maha Nakhon Si Ayutthaya (กรุงเทพมหานครศรีอยุธยา). Edmund Roberts, visiting the city as envoy of the United States in 1833, noted that the city, since becoming capital, was known as Sia-Yut'hia, and this is the name used in international treaties of the period.
The city's ceremonial name came into use during the reign of King Mongkut. The full name reads as follows:
Krung Thep Maha Nakhon Amon Rattanakosin Mahintharayutthaya Mahadilok Phop Noppharat Ratchathani Burirom Udomratchaniwet Mahasathan Amon Phiman Awatan Sathit Sakkathattiya Witsanukam Prasitกรุงเทพมหานคร อมรรัตนโกสินทร์ มหินทรายุธยา มหาดิลกภพ นพรัตนราชธานีบูรีรมย์ อุดมราชนิเวศน์มหาสถาน อมรพิมานอวตารสถิต สักกะทัตติยวิษณุกรรมประสิทธิ์
The name, composed of Pali and Sanskrit root words, translates as:
The city of angels, great city of immortals, magnificent city of the Nine Gems, seat of the King, city of royal palaces, home of gods incarnate, erected by Vishvakarman at Indra's behest.
The name is listed in Guinness World Records as the world's longest place name at 168 letters. Many Thais who recall the full name do so because of its use in the 1989 song "Krung Thep Maha Nakhon" by Thai rock band Asanee–Wasan, the lyrics of which consist entirely of the city's full name, repeated throughout the song.
Today, the city is officially known in Thai by a shortened form of the full ceremonial name, Krung Thep Maha Nakhon (กรุงเทพมหานคร), which is colloquially further shortened to Krung Thep (กรุงเทพฯ) or the initialism Ko Tho Mo (กทม.). Krung กรุง is a Thai word of Khmer origin, meaning 'capital, king', while thep, เทพ is from Pali/Sanskrit deva, meaning 'deity' or 'god'. The name is more commonly translated as 'City of Angels', which is also used to draw comparisons with Los Angeles in the United States, a comparably sized city with similar traffic issues. Another nickname sometimes used to refer to the city is "The Big Mango", a tongue-in-cheek comparison to The Big Apple for New York City.
Government
The city of Bangkok is locally governed by the Bangkok Metropolitan Administration (BMA). Although its boundaries are at the provincial (changwat) level, unlike the other 76 provinces, Bangkok is a special administrative area whose governor is directly elected to serve a four-year term. The governor, together with four appointed deputies, forms the executive body, which implements policies through the BMA civil service headed by the Permanent Secretary for the BMA. In separate elections, each district elects one or more city councillors, who form the Bangkok Metropolitan Council. The council is the BMA's legislative body and has power over municipal ordinances and the city's budget. The first gubernatorial election in nine years took place on 22 May 2022 after an extended lapse following the 2014 Thai coup d'état, and was won by Chadchart Sittipunt., then again on 28 June 2026 for a second term in office .
Bangkok is divided into fifty districts (khet, equivalent to amphoe in the other provinces), which are further subdivided into 180 sub-districts (khwaeng, equivalent to tambon). Each district is managed by a district director appointed by the governor. District councils, elected to four-year terms, serve as advisory bodies to their respective district directors.
The BMA is divided into sixteen departments, each overseeing different aspects of the administration's responsibilities. Most of these responsibilities concern the city's infrastructure, and include city planning, building control, transportation, drainage, waste management, and city beautification, as well as education, medical, and rescue services. Many of these services are provided jointly with other agencies. The BMA has the authority to implement local ordinances, although civil law enforcement falls under the jurisdiction of the Metropolitan Police Bureau.
As the capital of Thailand, Bangkok is the seat of all branches of the national government. The Government House, Parliament House, and Supreme, Administrative, and Constitutional Courts are all in the city. Sappaya-Sapasathan is the largest parliament building in the world. The National Assembly of Thailand convenes there. Bangkok is the site of the Grand Palace and Dusit Palace, respectively the official and de facto residence of the king. Most government ministries also have headquarters and offices in the capital.
Symbols
The city seal shows Hindu god Indra riding in the clouds on Airavata, a divine white elephant known in Thai as Erawan. In his hand Indra holds his weapon, the vajra. The seal is based on a painting done by Prince Naris, a brother of King Chulalongkorn. The tree symbol of Bangkok is Ficus benjamina. Giant barb (Catlocarpio siamensis) has been chosen as the aquatic animal of Bangkok. The official city slogan, adopted in 2012, reads:
As built by deities, the administrative centre, dazzling palaces and temples, the capital of Thailand กรุงเทพฯ ดุจเทพสร้าง เมืองศูนย์กลางการปกครอง วัดวังงามเรืองรอง เมืองหลวงของประเทศไทย
Geography
Bangkok covers an area of 1,568.7 km2 (605.7 sq mi), ranking 69th among the other 76 provinces of Thailand. Of this, about 700 km2 (270 sq mi) forms the built-up urban area. It is ranked 73rd in the world in terms of land area. The city's urban sprawl reaches into parts of the six other provinces that it borders, namely, in clockwise order from northwest: Nonthaburi, Pathum Thani, Chachoengsao, Samut Prakan, Samut Sakhon, and Nakhon Pathom. Except for Chachoengsao, these provinces, together with Bangkok, form the greater Bangkok Metropolitan Region.
Topography
Bangkok is situated in the Chao Phraya River delta in Thailand's central plain. The river meanders through the city in a southerly direction, emptying into the Gulf of Thailand approximately 25 km (16 mi) south of the city centre. The area is flat and low-lying, with an average elevation of 1.5 m (4 ft 11 in) above sea level. Most of the area was originally swampland, which was gradually drained and irrigated for agriculture by the construction of canals (khlong) which took place from the 16th to 19th centuries. The course of the river as it flows through Bangkok has been modified by the construction of several shortcut canals.
The city's waterway network served as the primary means of transport until the late 19th century, when modern roads began to be built. Up until then, most people lived near or on the water, leading the city to be known during the 19th century as the "Venice of the East". Many of these canals have since been filled in or paved over, but others still crisscross the city, serving as major drainage channels and transport routes. Most canals are now badly polluted, although the BMA has committed to the treatment and cleaning up of several canals.