Household Socio-Economic Survey

Economic Statistics Division, Socio-Economic Statistics Branch, Household Income-Expenditure Section
Tel: (66)(2) 281-0333 ext. 1809 - 1811 Fax: 281-8617

The first Household Socio-Economic Survey was conducted by the National Statistical Office (NSO) in 1957, known as " The Household Expenditure Survey". This name was changed to the Household Socio-Economic Survey in 1968 - 1969 and the survey was conducted every five years. Due to the rapid economic expansion and the importance of the survey in order to set the anti-poverty policy, the Ministerial Cabinet had passed an approval on September 8, 1987 for the NSO to carry out the survey every two years. The 2000 survey is the fifteenth survey of this kind. (The 1999 was conducted special periodic survey by the cabinet assignment.)

Summary Tables

The Content of Statisctical Tables

Table 1 Average Monthly Income and Expenditure of Household : 1975-2001
Table 2 Percentage of Average Monthly Income of Household by Type of Income : 1975-2001
Table 3 Percentage of Average Monthly Income of Household by Source of Income : 1975-2001
Table 4 Percentage of Average Monthly Expenditrue of Household by type of Expenditure : 1975-2001
Table 5 Percentage of Average Monthly Expenditure of Household by Expenditure Group : 1975-2001
Table 6 Current Income Share of Households by Quintile Groups of Households and the Gini Coefficient : 1990-2001
Table 7 The Gini Coefficient of Household Income Distribution by Region and Area : 1975-2001


The primary objective of the survey is collecting information on household income and household expenditures, household consumptions, changes in assets and liabilities, the durable goods ownerships, and housing characteristics including other living conditions of households.


The survey covered all private, non-institutional households residing permanently in municipal areas , sanitary districts, and villages of all regions. However, it excluded that part of the population living in transient hotels and rooming houses, hostels, boarding schools, temples, military barracks, prisons, welfare institutes, hospitals and other such institutions. It also excluded households of foreign diplomats and other temporary residents.

Sample Design

A stratified, three-stage sample design was adopted for the survey since 1975-76 until 1986. The primary and secondary sampling units were Amphoes and blocks (in municipal areas) or villages (non-municipal areas) respectively. The private households were the ultimate sampling units.
Since 1988 onwards, a stratified two-stage sampling was adopted for the survey. The primary sampling units were blocks for municipal areas and were villages for non-municipal areas. The secondary sampling units were private households.

Survey Contents

The survey included the following subject areas:
  1. Household members characteristics such as sex, age, education, occupation, etc.
  2. Household income
  3. Household expenditures
  4. Housing characteristics
  5. Ownership of household durable goods

National Statistical Office
Larn Luang Road, Bangkok 10100 Thailand