2021 population census in Hong Kong

2021 population census in HK

Basic information
Department	Census and Statistics Department (Hong Kong)
Period	2021.6.23 – 2021.8.4
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The 2021 population census (21C) in Hong Kong was conducted by the Census and Statistics Department (C&SD) of the HKSAR Government during 23 June to 4 August 2021. The 21C was conducted under the Census and Statistics (2021 Population Census) Order, which was made by the Chief Executive in Council under Section 9 of the Census and Statistics Ordinance (Cap 316). The Order, published in the Gazette on 16 October 2020, provided statutory backing for the conduct of the 21C. ^[1]

The 21C comprised a simple enumeration on about nine-tenths of households in Hong Kong to provide basic information (e.g. year and month of birth and sex) and a detailed enquiry on the remaining one-tenth on a broad range of demographic and socio-economic characteristics. Therefore, two types of questionnaire, namely the "Short Form" and the "Long Form", were used.

The "Short Form", which was used in the simple enumeration, covered only some basic questions. On the other hand, the "Long Form", which was used in the detailed sample enquiry, included not only those questions covered in the "Short Form", but also additional ones related to the socio-economic characteristics of the population and the characteristics of households and quarters. Taking together the common information collected in both the "Short Form" and "Long Form" would give the complete enumeration results on the basic characteristics of the population. It would also form the basis for estimation of the detailed socio-economic characteristics collected through the "Long Form".