The first paper in the Indigenous Population Project 2011 Census Papers series has been released. 'Indigenous Language Usage' by Dr Nicholas Biddle examines recent census data on Indigenous language usage across the nation. In this new series, CAEPR authors document the changing composition and distribution of a range of Indigenous outcomes using recently released 2011 Census data. The analysis in the series was funded by the Commonwealth Department of Families, Housing, Community Services and Indigenous Affairs (FaHCSIA) through the Strategic Research Project, as well as FaHCSIA and State/Territory governments through the Indigenous Populations Project.