The population and housing census is part of an integrated national statistical system, which may include other censuses (for example, agriculture), surveys, registers and administrative files. It provides, at regular intervals, the benchmark for population count at national and local levels. For small geographical areas or sub-populations, it may represent the only source of information for certain social, demographic and economic characteristics. For many countries the census also provides a solid framework to develop sampling frames. This publication represents one of the pillars for data collection on the number and characteristics of the population of a country.

The increased importance of international migration flows worldwide & the changing nature of this phenomenon has led to a need to improve statistics on international migration. This publication outlines a process by which both the quality & the comparability of statistics may be improved. It also provides a framework for the compilation of statistics on international population movements.

The 2021 edition of International Migration Outlook analyses recent developments in migration movements and the labour market inclusion of immigrants in OECD countries. It also monitors recent policy changes in migration governance and integration in OECD countries.

Identifies the major weaknesses in the current United Nations system and proposes fundamental reforms to address each. This title is also available as Open Access.