science

Provincial administrative organization

Provincial administrative organization is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Provincial administrative organization rather than just read about it. In short: The Provincial Administrative Organization (PAO) (Thai: องค์การบริหารส่วนจังหวัด, Acronym: อบจ.) is a devolved local government body in Thailand. It is developed from the existing provincial council which provided advices and recommendations on behalf of local people to a centrally-appointed governor.

Key takeaways

Provincial administrative organization belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Provincial administrative organization to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Provincial administrative organization from memory before moving on to harder problems.

Reference excerpt

The Provincial Administrative Organization (PAO) (Thai: องค์การบริหารส่วนจังหวัด, Acronym: อบจ.) is a devolved local government body in Thailand. It is developed from the existing provincial council which provided advices and recommendations on behalf of local people to a centrally-appointed governor. Each province (excluding Bangkok, which is administered by the Bangkok Metropolitan Administration) can have one provincial administrative organization. Due to separation of powers, a provincial administrative organization, headed by a chief executive, and a Provincial Administrative Organization Council (Thai: สภาองค์การบริหารส่วนจังหวัด) are separate bodies that work together. Local elections are held every 4 years to elect the PAO chief executives and council members, the most recent PAO local election was in 2025.

History

Early history During 1892 - 1932, Siam (then Thailand) employed a four-level administrative division, like the People's Republic of China today. The country was divided into several provinces (Thai: มณฑล), each of which contained many prefectures (Thai: เมือง/จังหวัด). Each prefecture was subdivided into districts (Thai: อำเภอ) and subdistricts (Thai: ตำบล) respectively. After the Siamese revolution of 1932, all prefectures became provinces in their own right. In 1938, the Thai government proposed that each province, aside from being run by a centrally-appointed lord lieutenant (Thai: ข้าหลวงประจำจังหวัด) or governor (Thai: ผู้ว่าราชการจังหวัด), must also have an advisory council composed of local people. council provided advice and recommendations to the governor. In addition, the council also acted as an auditor for the province. The council had at least 9 members selected from all districts in that province. Each district was entitled to one councillor. If the population of one district exceeded 30,000, the number of members could be found by dividing the population by 30,000 and take the quotient. However, if the remainder of the division exceeds 15,000, one member was also added. For instance, the district with a population of 80,000 will have [80,000 ÷ 30,000] = 2 councillors. Since the remainder is 20,000, one additional member is needed. Therefore, the overall number of councillor is 2+1 = 3.

Mathematical Complexities In 1955, the minimum number of councillor was changed from 9 to 12. The mathematical process of selecting councillors became more complex. If the overall number of councillor was less than 12, an adjusting value is computed by dividing the population of that province by the minimum number of councillor (in this case, 12). All districts in that province were then sorted in terms of their populations. The district that had the highest population got one more councillor. If the overall number of councillors was still less than 12, the population of the latest selected district was subtracted by the adjusting value before the process was repeated. In addition, another class of councillors was selected from local municipalities and other people appointed by the interior minister . One year later, it was realised that there were too few councillors. The minimum number of provincial councillors was raised from 12 to 24. The divisor was dropped from 30,000 to 15,000. If the remainder of the division exceeded 7,500, one more councillor was added.

Example of determining the number of councillors in 1956 The province A has a population of 261,000. The adjusting value is [261,000 ÷ 24] = 10,875 The populations of all districts are shown below. If the population was less than 15,000, the number of councillor is one. If, however, the population exceeds 15,000, there is one more member per each 15,000. If the remainder exceeds 75,000, a member is added.

Since the number of councillor is 18, the process repeats 6 more times. All districts are ranked with respect to populations. In the first round, district H get one more councillor. The adjusted population for district H is 82,000- 10,875 = 71,125. The process repeats 5 more times. The population of the selected district is then reduced by the same adjusting value. The whole process can be shown below.

To sum up, districts H and G have 6 and 2 more councillors. The numbers are added in the preceding table.

Simplification and Reformation In 1967, the government led by Thanom Kittikachorn proposed that the number of councillors depended on the population of that province, that is:

Kittikachorn's government also simplified the process of selecting councillors. Each district was entitled to one councillor. If the overall number of councillors was below the minimum number according to the table above, all districts were sorted. The district that has the maximum population received one more councillor. If the overall number of councillors was still below the minimum number, the population of latest selected district would be reduced by the adjustment value before ranking all districts again. The adjusting value was calculated by dividing the population of that province by the relevant minimum number of councillors. In 1997, Thailand introduced the new constitution written by delegates of its people. The provincial administrative organization was introduced as a separate body from the provincial council, but the work closely with each other. The provincial administrative organization is managed by the president, who was expected to be a replacement of the centrally-appointed governor. The council is chaired by one of its member and is expected to provide advices, recommendations and plans to the president. The number of provincial councillors, like Kittikachorn's government, depends on the population as shown in the table below.

Example of determining the number of councillors in 1997 and onwards Due to the simplification of process, the process of determining the number of councillors involves only ranking and adjusting the population. Province A initially has 10 councillors. The required number is 24, so there must be 24-10 = 14 rounds of ranking and adjusting. Once the ranking is completed, the district with the highest number of people is selected. The selected district then has its population adjusted before the process repeats. The determination process can be show below.

As a conclusion, districts H and G have 6+7 = 7 and 5+1=6 councillors respectively. Districts D and F have 2 provincial councillors. Each of other districts is entitled to 1 councillor.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Provincial administrative organization

Start with the simplest possible case. Write down what Provincial administrative organization claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Provincial administrative organization before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Provincial administrative organization ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Provincial administrative organization

In research: Provincial administrative organization appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Provincial administrative organization in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Provincial administrative organization is common in secondary-school and first-year university syllabi. It links to neighbouring topics Administrative divisions in Asia, Subdivisions of Thailand, Types of administrative division, so understanding it makes those chapters shorter.
In everyday life: Look for Provincial administrative organization outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Provincial administrative organization in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Provincial administrative organization means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Provincial administrative organization out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Provincial administrative organization in simple terms?

Why does Provincial administrative organization matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Provincial administrative organization?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Provincial administrative organization.