Population census is generally conducted every 10 years

The national population census is the state to develop a unified time node and unified methods, projects, questionnaires, in strict accordance with the instructions in accordance with the law on the existing population of the country universally, household by household to carry out a full survey and registration, data summary analysis report, the census focuses on understanding the development and change of population, gender ratio, sex ratio at birth, etc., the national census belongs to the national situation survey, the census is a national survey of the population. Population development and change, sex ratio, sex ratio at birth, etc., the national population census is a national survey.

It is one of the most basic scientific methods of collecting demographic information widely used in countries around the world today, and is the main source of providing national population data.

In November 2019, after Premier Li Keqiang's signature and approval, the State Council issued the Notice on Conducting the Seventh National Population Census. In accordance with the Statistical Law of the People's Republic of China*** and the Regulations on the National Population Census, the State Council decided to conduct the seventh national population census on November 1, 2020 at 00:00 hours.

1. Definition of Population Census:

Population census refers to a comprehensive and systematic survey and statistics on the population of a country or region; detailed information on the size, structure, distribution, and characteristics of the population can be obtained through a population census.

2. Census cycle:

The population census is generally conducted once every 10 years, which is a standard generally adopted internationally; a 10-year cycle provides a relatively stable and comparable time interval for monitoring and analyzing population changes.

3. Purpose and application:

The purpose of a population census is to understand the basic situation, trends and characteristics of the population, and to provide a basis for development planning and policy formulation at the national and regional levels; the data from the census are widely used in the fields of socio-economic development, urban planning, education, medical care and health care, and social security.

4. Advances in Technology and Methods:

With the development of science and technology and the advancement of data processing technology, the methods and approaches of population census have been constantly improved and innovated; some countries and regions have begun to try to utilize modern technologies such as the Internet, mobile devices, and big data analytics, etc., to carry out an online or hybrid population census.

A population census is an important endeavor to comprehensively count the population of a country or region. It is generally conducted on a 10-year cycle, which is to maintain stability and comparability of data. The purpose of the census is to understand the basic situation and trends of the population and to provide a basis for national and regional development planning and policy making.

Population census data are widely used in various fields, such as economic development, urban planning, education, health care and social security. With the advancement of technology, some countries have begun to experiment with the use of modern technology to conduct online or hybrid censuses in order to improve the efficiency and accuracy of the census. Census data are important guides for social and economic development.