BEIJING - China will launch a nationwide population sample survey in 2025 to help monitor the demographic development of the country, according to the National Bureau of Statistics.

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Some 14 million people from about five million households, or 1 percent of the country's population, will be surveyed from Nov 1 next year, said the NBS.

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Selected residents will be asked about their basic information ranging from age, gender, and education level to marital status and housing conditions.

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China started its first population sample survey in 1987. So far, four such surveys have been conducted.