Executive Summary
The amphoe (อำเภอ, often written amphur and usually translated “district”) is the second tier of Thailand’s territorial administration. It sits below the province (changwat) and above the subdistrict (tambon) and the village (muban). The amphoe is not a unit of local self-government. It is a field arm of the central state. Its chief, the nai amphoe, is a career official of the Ministry of Interior, and the amphoe has no elected council, no budget raised from its own taxes, and no legal personality apart from the state. Even so, it is the level of government that ordinary Thai citizens deal with most often. Births, deaths, marriages, house registration, identity cards, firearms licences, and military registration all pass through the district office. The amphoe also supervises the elected village and subdistrict headmen and keeps watch over the elected local bodies that have grown up beside it since the 1990s.
This paper describes the amphoe’s legal and historical basis, measures its size and the wide variation in that size across provinces, sets out what it does between the village and the national government, and compares it with intermediate tiers in other countries. The comparison shows that the amphoe belongs to a family of deconcentrated “state-in-the-district” offices, such as the French arrondissement, the South Asian tehsil or taluk, and the Malaysian daerah. It differs sharply from the self-governing county of the Anglo-American tradition.
1. Place in the Administrative Structure
Thai public administration is organized in three branches under the State Administration Act of B.E. 2534 (1991): central administration (ministries and departments in Bangkok), provincial or regional administration (ratchakan suan phumiphak), and local administration (ratchakan suan thongthin). The amphoe belongs to the second of these. The provincial government consists of provinces; each province is led by a Governor and is divided into districts, and in each province there is one capital district (amphoe mueang). Each district is led by a district chief officer, appointed by the Ministry of Interior, who is a subordinate of the provincial governor.
The territorial chain therefore runs: province, then amphoe, then tambon, then muban. The tambon and muban have headmen (kamnan and phu yai ban) chosen locally but treated in law as part of the provincial administration. Alongside this chain runs a separate set of elected local bodies: Provincial Administrative Organizations (PAOs), municipalities (thesaban) of several grades, and Subdistrict Administrative Organizations (SAOs, also called TAOs). Bangkok and Pattaya have special status. The amphoe overlaps all of these geographically but is a different kind of thing. It is an office of the state rather than a government of the residents.
Bangkok exception. Bangkok is not divided into amphoe. Thailand has 928 districts in all, including the 50 districts of Bangkok, which have been called khet since the Bangkok administrative reform of 1972. The khet are offices of the Bangkok Metropolitan Administration, a self-governing body with an elected governor, so they follow different rules. This paper deals with the 878 amphoe outside the capital. As of 31 December 2018 there were 878 districts (amphoe) in Thailand, a figure that excludes the districts of Bangkok.
Historical background. The amphoe took its modern shape during the thesaphiban reforms of King Chulalongkorn’s reign, led by Prince Damrong Rajanubhab as Minister of Interior from 1892. Those reforms replaced a patchwork of semi-hereditary governors and tributary lords with salaried officials appointed from Bangkok (Tej Bunnag, 1977). The present legal basis for the district chief is older than the 1991 act. The nai amphoe is a Ministry of Interior official appointed under the Provincial Administration Act B.E. 2457 (1914) and answerable to the provincial governor.
Minor districts. For most of the twentieth century, Thailand also used the king amphoe (“branch district”), a smaller sub-unit for remote areas. A minor district was established in large areas where the small number of residents did not warrant the formation of a full district. The Thai government upgraded all remaining 81 minor districts to full districts on 15 May 2007 to streamline administration, and the order became official with publication in the Royal Gazette on 24 August. Since then the system has had a single district tier.
Criteria for creation. New amphoe are carved out by royal decree when a district grows too large to serve. The criteria are a population of at least 30,000 and at least five tambon, or, where the area lies more than 25 km from the district office, a population of at least 15,000 and four tambon. These thresholds show the logic of the unit: it is meant to be close enough to residents that they can travel to the district office for their paperwork.
2. Size of the Amphoe
2.1 National averages
Two averages circulate, and the difference between them is a matter of what is counted. One widely repeated figure states that the average area of a district in Thailand is about 552.93 km², while its average population is about 75,345 people. That figure divides the whole kingdom, Bangkok included, by all 928 district-level units.
A calculation limited to the 878 amphoe proper gives a somewhat different picture. Thailand’s land area is roughly 513,000 km², of which Bangkok takes about 1,570 km². Dividing the remaining area by 878 gives an average amphoe of roughly 580 km². Thailand’s registered population was about 66 million in the mid-2020s, of which Bangkok held roughly 5.5 million registered residents. Dividing the remainder by 878 gives an average of roughly 69,000 registered residents per amphoe (see Note 1). In American terms, the typical amphoe is somewhat smaller in area than an average U.S. county and similar in population to a mid-sized rural or small-city county.
2.2 Extremes
The averages hide very wide variation.
- Largest by area: Umphang in Tak province, at 4,325.4 km², is the largest and also has the lowest population density. It is a mountainous border district of forest reserves and Karen settlements. Highway 1090 from Mae Sot is the only road linking Umphang to the rest of Thailand.
- Smallest by area: Island districts sit at the other end. Ko Sichang in Chonburi covers about 17 km² and consists of a single subdistrict, Tha Thewawong, which is further subdivided into seven villages and completely covered by a township municipality.
- Smallest by population: Ko Kut district in Trat province, a group of islands, had a population of 2,894 in 2011, making it the least populous of all Thailand’s districts.
- Largest by population: The capital districts of large provinces near Bangkok and in the regional centres hold the most people. In the 2000 census, Mueang Samut Prakan ranked first with 435,122 residents. Mueang Nakhon Ratchasima is close behind; one recent tabulation gives it an area of 755.596 km², 25 subdistricts, 243 villages, and a population of 433,838.
The ratio between the most and least populous amphoe is therefore roughly 150 to 1. The ratio in area is roughly 250 to 1. In most cases the capital district is also the most populous district of the province, as the provincial administration is usually in the largest town of the province.
2.3 Variation by province
The number of amphoe per province ranges from three to thirty-two. At the top, Nakhon Ratchasima is divided into 32 districts, further subdivided into 263 subdistricts and 3,743 villages. At the bottom are small, dense provinces such as Samut Songkhram, which is divided into three districts, further divided into 36 subdistricts and 284 villages. Phuket and Samut Sakhon also have three each.
The following table gives approximate province-level averages for a sample chosen to show the spread. Figures are rounded and derived from provincial area and registered population divided by number of amphoe (see Note 2).
| Province | Region | Amphoe | Approx. area (km²) | Approx. population | Avg. area per amphoe (km²) | Avg. population per amphoe |
|---|---|---|---|---|---|---|
| Mae Hong Son | North | 7 | 12,700 | 285,000 | 1,810 | 41,000 |
| Tak | North/West | 9 | 16,400 | 670,000 | 1,820 | 74,000 |
| Chiang Mai | North | 25 | 20,100–22,300 | 1,800,000 | 800–890 | 72,000 |
| Nakhon Ratchasima | Northeast | 32 | 20,500 | 2,630,000 | 640 | 82,000 |
| Ubon Ratchathani | Northeast | 25 | 15,700 | 1,880,000 | 630 | 75,000 |
| Khon Kaen | Northeast | 26 | 10,900 | 1,800,000 | 420 | 69,000 |
| Narathiwat | South | 13 | 4,500 | 820,000 | 345 | 63,000 |
| Phuket | South | 3 | 540 | 420,000 | 180 | 140,000 |
| Samut Songkhram | Central | 3 | 414 | 187,000 | 138 | 62,000 |
| Samut Prakan | Central | 6 | 950 | 1,360,000 | 158 | 227,000 |
| Nonthaburi | Central | 6 | 620 | 1,290,000 | 104 | 215,000 |
Three patterns stand out.
First, in area, the North and West are the outliers. Mountain provinces along the Myanmar border have amphoe averaging around 1,800 km², roughly three times the national mean. Tak shows the internal range well: its districts run from Wang Chao at about 329 km² to Umphang at 4,325 km² (Maps of World, n.d.).
Second, in population, the Bangkok periphery is the outlier. Samut Prakan and Nonthaburi have been absorbed into the capital’s urban region. Their amphoe average over 200,000 residents each, three times the national mean, because district boundaries have not been subdivided as fast as population has grown.
Third, the Northeast is the closest to the “standard” amphoe. Large Isan provinces such as Khon Kaen, Ubon Ratchathani, and Nakhon Ratchasima have been split into many districts of moderate area and moderate population. This reflects both the region’s dense, evenly spread rice-farming population and a deliberate policy of creating new districts, often during the counter-insurgency years of the 1960s through 1980s, to extend state presence into the countryside. The example of Phop Phra in Tak shows the same motive in the West: due to the large size of Mae Sot and problems with communist insurgents, the government created a separate administration for the area.
In short, population per amphoe varies much less than area does, except at the metropolitan fringe. This is what the creation criteria would lead one to expect. The state has tried to keep each district office within reach of a manageable number of residents, accepting very large districts where people are few and lagging behind where cities grow quickly.
3. Functions of the Amphoe
The amphoe’s functions fall into six groups.
3.1 Civil registration and identity
This is the amphoe’s most visible task. Civil registry is one of the tasks of the amphoe, which makes the district the most important of the administrative levels for the Thai public. Under the Civil Registration Act B.E. 2534 (1991), as amended, the District Chief Officer is the district registrar, with the power to appoint assistants. The district office records births, deaths, marriages, divorces, and changes of residence; maintains the house registration book (tabien baan); and issues national identity cards. A Ministry of Interior presentation to the United Nations counted 878 district civil registration offices and 1,554 municipal civil registration offices, with 77 provincial offices for supervision and regulation. Registration in municipal areas is shared with the municipality, but marriage and divorce always stay with the amphoe or khet.
Because Thailand’s population statistics are built on this registry rather than on the census alone, the amphoe is also, in effect, the basic data-collection unit of the state.
3.2 Supervision of village and subdistrict headmen
The kamnan and phu yai ban are elected by residents but are paid and supervised by the Department of Provincial Administration. The nai amphoe supervises the kamnan of each tambon and the phu yai ban of each village. The district chief calls them to regular monthly meetings at the district office, passes down instructions from the province and ministries, and receives reports on local conditions. This chain from amphoe to tambon to muban is the oldest and most dependable line of communication between Bangkok and the countryside. An older study described district officers’ primary function as working as points of contact between the government and the people.
3.3 Oversight of elected local bodies
Since the decentralization program that followed the 1997 Constitution and the Decentralization Act of 1999, a large share of local services (local roads, waste collection, early childhood centres, small water systems) has moved to SAOs and municipalities. The amphoe does not deliver these services, but it oversees the bodies that do. The district chief, acting under delegation from the provincial governor, reviews SAO budgets and by-laws, can investigate complaints against SAO officials, and reports misconduct upward. This oversight role has long drawn criticism from decentralization advocates, who see it as a way for the Ministry of Interior to keep control over nominally autonomous bodies (Chardchawarn, 2010; Nelson, 1998). The pattern is an old one. A Library of Congress study noted that, in earlier decades, sanitation districts were financially and administratively dependent on the government, notably the district administration.
3.4 Public order and security
The amphoe is the lowest level at which the Ministry of Interior exercises its security functions. The district chief licenses firearms outside Bangkok, regulates certain permits for gatherings and entertainment, and commands the district’s Volunteer Defence Corps (Or Sor) contingent. In emergencies, the district chief coordinates disaster relief and evacuation. Military registration of young men and the annual conscription selection are carried out at the district level. In the southern border provinces, district offices have been central to both civil administration and the security response to the long-running insurgency.
3.5 Dispute mediation and complaints
District offices operate mediation services for civil and minor criminal disputes, particularly land boundaries, debts, and family matters, and host complaint centres where residents can bring grievances against officials. In practice, the district chief often acts as an informal arbiter, a role that resembles that of a magistrate in an older sense.
3.6 Coordination of line agencies
Most central ministries maintain district-level offices: agriculture, public health, community development, education, land, and revenue among them. The district chief is expected to coordinate these into a coherent presence, and Thai administrative reform efforts have repeatedly tried to strengthen that coordinating role under the label of an “integrated district.” The results have been mixed, because line officials answer to their own ministries for budgets and careers (Siffin, 1966; Mutebi, 2004).
3.7 Summary of the amphoe’s position between levels
Seen from above, the amphoe is the province’s instrument for reaching residents. It applies national law and provincial instructions, collects information, and supervises local actors. Seen from below, it is the place where residents obtain the documents that establish their legal existence, and the office to which headmen and SAO leaders must report. It performs no legislative function and raises no taxes of its own. Its authority is entirely delegated, but because it is the point of contact, it carries more practical weight in everyday life than either the province or the elected local bodies.
4. Comparisons with Other Nations
Intermediate administrative tiers around the world fall broadly into two families: deconcentrated state offices, where an appointed official represents the central government in a territory, and self-governing local authorities, where residents elect a council that raises revenue and makes local rules. The amphoe is a clear member of the first family.
4.1 France: the arrondissement
The closest structural parallel is the French arrondissement, headed by a sous-préfet appointed by the central government and subordinate to the préfet of the département. Like the amphoe, the arrondissement has no elected council and no budget of its own; it exists to bring the state closer to residents and to supervise the elected communes beneath it. The Thai pairing of an appointed governor and an appointed district chief over elected headmen and councils closely matches the French pairing of préfet and sous-préfet over elected mayors. One difference is weight: since the decentralization laws of the 1980s, French communes and départements hold far more power and revenue than Thai SAOs, so the sous-préfet’s supervisory role is lighter than the nai amphoe’s.
4.2 South Asia: the tehsil or taluk
In India, Pakistan, and Bangladesh, the tehsil, taluk, or upazila (names vary by country and state) is a revenue and administrative subdivision of a district. Its head, the tehsildar or upazila nirbahi officer, is an appointed civil servant who keeps land records, issues certificates of caste, income, and residence, conducts magistrate-level functions, and coordinates disaster relief. The parallels with the amphoe are strong: both are the office where a rural citizen goes to prove who they are and what they own. The main difference is land: in South Asia the tehsil is above all a land-revenue office, while in Thailand land titling is handled by a separate Department of Lands, and the amphoe’s core is civil registration.
4.3 Malaysia: the daerah
Peninsular Malaysia’s daerah (district), inherited from British colonial administration, is headed by a District Officer who manages land administration and coordinates federal and state agencies. Separately, elected-in-principle (though in practice appointed) local councils handle municipal services. The Malaysian district shares the amphoe’s role as a coordinating office of a higher government, though in Malaysia that higher government is the state rather than the federation.
4.4 Indonesia: the kecamatan
Indonesia’s kecamatan (subdistrict), headed by a camat, is the nearest analogue within Southeast Asia in terms of size and function: it processes identity and civil documents, supervises villages, and coordinates services. But since Indonesia’s 1999–2001 decentralization, the camat is appointed by the elected regent (bupati) or mayor and serves the autonomous regency, not the national government. The kecamatan is thus deconcentrated local government, whereas the amphoe is deconcentrated central government. This makes the Thai system noticeably more centralized.
4.5 Mainland neighbours: Laos, Cambodia, and Vietnam
Laos (muang) and Cambodia (srok) have district tiers that perform registration and supervisory functions under appointed chiefs, broadly similar to the amphoe and reflecting a shared regional heritage of district-level royal administration. Vietnam offers a contrast: in 2025 it carried out a sweeping reorganization that merged provinces and abolished the district (huyện) tier entirely, moving to a two-level system of provinces and communes. This shows that the intermediate tier is not a fixed necessity of administration; Thailand has instead kept and strengthened its district tier while building elected local bodies alongside it.
4.6 China: the county
The Chinese county (xian) is comparable in population to a large amphoe but is a full level of government with its own people’s congress, budget, courts, and party committee. It delivers schools, hospitals, and infrastructure directly. The amphoe has none of this governmental apparatus, so the comparison is mainly one of scale rather than function.
4.7 The United States and the United Kingdom: the self-governing county and district
English-language sources often describe amphoe as “analogous to counties,” and the analogy holds for size and for the role of a county seat as the place where records are kept. Functionally it is misleading. An American county has an elected governing body, elected officers (sheriff, clerk, assessor, prosecutor), its own property-tax base, and authority to pass ordinances. A British district council is likewise an elected body with its own revenues. The amphoe has none of these. A better American analogy for the amphoe’s daily role would be a combination of a county clerk’s office, a state driver’s licensing office, and a federal Social Security field office, all staffed by central officials, located in the county seat, and answering upward rather than to local voters.
4.8 Japan: the gun
Japan’s gun (district) once played a similar intermediate role but lost its administrative functions in the 1920s and now survives mostly in addresses and statistics. Japan shows one path an intermediate tier can take when elected municipalities become strong enough to deal with the prefecture directly. Thailand has not followed that path, in part because SAOs remain small and dependent on central transfers.
4.9 Comparative summary
| Unit | Country | Head appointed or elected | Own elected council | Own tax base | Core daily function |
|---|---|---|---|---|---|
| Amphoe | Thailand | Appointed by central ministry | No | No | Civil registration; supervision of headmen and local bodies |
| Arrondissement | France | Appointed by central state | No | No | State representation; supervision of communes |
| Tehsil / taluk | India | Appointed by state government | No (separate panchayat tier exists) | No | Land records; certificates |
| Daerah | Malaysia | Appointed by state | No | No | Land administration; coordination |
| Kecamatan | Indonesia | Appointed by elected regent | No | No | Civil documents; village supervision |
| County (xian) | China | Party-state appointment with congress approval | Yes (people’s congress) | Yes | Full service delivery |
| County | United States | Elected officials | Yes | Yes | Full local government |
| Gun | Japan | None (vestigial) | No | No | Addresses and statistics |
5. Assessment
The amphoe has proved durable for more than a century because it solves a practical problem: it places the state’s record-keeping and supervisory capacity within a day’s travel of nearly every resident, without requiring the state to share sovereignty with local electorates. Its strengths are continuity, uniformity, and a well-trained cadre of district officials who rotate across the country. Its weaknesses are the mirror image. Accountability runs upward to the Ministry of Interior rather than outward to residents, and its oversight of elected local bodies has made decentralization slower and more contested in Thailand than in Indonesia or France.
The size data show a system that has kept population per district roughly uniform in the countryside while falling behind in the urban belt around Bangkok, where districts of more than 200,000 residents now operate with the same basic structure as island districts of a few thousand. Any future reform is likely to focus on that urban fringe and on the long-debated question of how much of the amphoe’s supervisory role should pass to elected provincial and local bodies.
Notes
- Averages. The commonly cited figures of about 553 km² and 75,345 people per district divide the whole kingdom by all district-level units, including Bangkok’s khet. The figures of roughly 580 km² and 69,000 registered residents given in Section 2.1 are this paper’s own recalculation, dividing the area and registered population outside Bangkok by 878. Both are approximations; registered population differs from actual resident population, particularly in provinces with large numbers of migrant workers or residents who keep house registration in their home district while living elsewhere.
- Provincial table. Figures in the table in Section 2.3 are rounded estimates derived from published provincial areas and Department of Provincial Administration registration totals of the early to mid-2020s, divided by the number of amphoe. Chiang Mai is given as a range because older official figures (about 20,100 km²) and newer GIS-based figures (about 22,300 km²) differ. Tak’s area is the sum of district areas listed in one published table. Readers needing precise figures for a given year should consult the DOPA registration statistics and the National Statistical Office directly.
- Number of amphoe. The figure of 878 has been stable since the 2007 upgrade of minor districts. Some popular sources give higher figures by counting the 50 Bangkok khet together with some other units; this paper follows the DOPA count.
- Terminology. “Amphoe” refers both to the territory and to the district office (thi wa kan amphoe). The district chief is nai amphoe; assistant district officers are palat amphoe. The capital district of each province is amphoe mueang, except in Phra Nakhon Si Ayutthaya, where the capital district carries the name Phra Nakhon Si Ayutthaya.
- Comparative material. The comparative descriptions in Section 4 are summary sketches of systems that vary internally (for example, the names and powers of Indian subdistricts differ by state). Vietnam’s 2025 abolition of the district tier is recent, and implementation details may continue to change.
References
Chardchawarn, S. (2010). Local governance in Thailand: The politics of decentralization and the roles of bureaucrats, politicians, and the people (V.R.F. Series No. 459). Institute of Developing Economies, Japan External Trade Organization.
Chidchanognarth, V. (2019). Civil registration, vital statistics and identity management system in Thailand [Conference presentation]. United Nations Expert Group Meeting on CRVS and Identity Management, New York, NY, United States. https://unstats.un.org/unsd/demographic-social/meetings/2019/newyork-egm-crvsims/docs/presentations/Thailand.pdf
Department of Provincial Administration. (n.d.). Civil Registration Act B.E. 2534 (1991), as amended [Unofficial English translation]. Ministry of Interior, Thailand. https://multi.dopa.go.th/tspd/official_letter/download/2681/EN
LePoer, B. L. (Ed.). (1987). Thailand: A country study (6th ed.). Federal Research Division, Library of Congress. https://countrystudies.us/thailand/78.htm
Maps of World. (n.d.). Tak map: Districts of Tak, Thailand. https://www.mapsofworld.com/amp/thailand/provinces/tak-map.html
Mutebi, A. M. (2004). Recentralising while decentralising: Centre–local relations and “CEO” governors in Thailand. Asia Pacific Journal of Public Administration, 26(1), 33–53.
Nelson, M. H. (1998). Central authority and local democratization in Thailand: A case study from Chachoengsao Province. White Lotus Press.
Siffin, W. J. (1966). The Thai bureaucracy: Institutional change and development. East-West Center Press.
Tej Bunnag. (1977). The provincial administration of Siam, 1892–1915: The Ministry of the Interior under Prince Damrong Rajanubhab. Oxford University Press.
ThaiLawOnline. (2026, September 7). Amphoe / amphur (อำเภอ): District and district office in Thailand. https://www.thailawonline.com/glossary/amphoe-or-amphur-district-office/
Wikipedia contributors. (n.d.-a). Districts of Thailand. In Wikipedia. Retrieved November 4, 2026, from https://en.wikipedia.org/wiki/Districts_of_Thailand
Wikipedia contributors. (n.d.-b). Ko Kut district. In Wikipedia. Retrieved November 4, 2026, from https://en.wikipedia.org/wiki/Ko_Kut_district
Wikipedia contributors. (n.d.-c). List of districts of Thailand. In Wikipedia. Retrieved November 4, 2026, from https://en.wikipedia.org/wiki/List_of_districts_of_Thailand
Wikipedia contributors. (n.d.-d). Nakhon Ratchasima province. In Wikipedia. Retrieved November 4, 2026, from https://en.wikipedia.org/wiki/Nakhon_Ratchasima_province
Wikipedia contributors. (n.d.-e). Organization of the government of Thailand. In Wikipedia. Retrieved November 4, 2026, from https://en.wikipedia.org/wiki/Organization_of_the_government_of_Thailand
Wikipedia contributors. (n.d.-f). Samut Songkhram province. In Wikipedia. Retrieved November 4, 2026, from https://en.wikipedia.org/wiki/Samut_Songkhram_province
Wikipedia contributors. (n.d.-g). Umphang district. In Wikipedia. Retrieved November 4, 2026, from https://en.wikipedia.org/wiki/Umphang_district
Wyatt, D. K. (2003). Thailand: A short history (2nd ed.). Yale University Press.
