Demopædia is a collaborative initiative facilitated by the United Nations Department of Economic and Social Affairs and the International Union for the Scientific Study of Population. It serves as a comprehensive multilingual encyclopedia focusing on demographic sciences. With its roots tracing back to the first edition published in 1958, Demopædia is dedicated to the dissemination of demographic knowledge across multiple languages, including English, Spanish, French, German, Arabic, Japanese, Chinese, and more.

The platform offers a diverse range of resources, including a multilingual demographic dictionary, which harnesses scholarly contributions to enhance global understanding of population studies. Users can access detailed articles, definitions, and historical contexts of demographic terms, all aimed at researchers, educators, and policy-makers. Demopædia not only aims to preserve demographic knowledge but also fosters cross-cultural dialogue around population issues, making it an essential resource for anyone interested in the complexities of global demographics