Censuses provide population numbers, household or family size and composition, and information on sex and age distribution. They often include other demographic, economic and health-related topics as well. The 2001 Greece de facto census collected data through face-to-face interviews on the subjects of housing, household demographics, education, fertility, migration, and employment. The census day was March 18, 2001.

This source appears in the United Nations Demographic Yearbook.