Growing international migration and diverse characteristics of migrant populations make internationally comparable high-quality data on migrants essential. Regular update of these data is crucial to capture the changes in size and composition of migrant populations. This document presents the first results of the update of the Database on Immigrants in OECD Countries (DIOC) for 2010/11. It describes immigrant and emigrant populations by socio-demographic characteristics and labour market outcomes in the OECD, and shows their evolution in the past decade. It also provides updated emigration rates and brain drain figures...