Adult community Education (ACE) is a recognisable education sector that offers accessible lifelong learning opportunities that are learner-centred and needs based. The Australian ACE scan profiles the sector in terms of its programs, features and provider types. The scan outlines ACE program participants, outcomes and the policy areas they support. It also explores the challenges facing the sector in terms of sustainability. This scan builds on the work completed in Adult Learning Australia's previous ACE scans (2014; 2015; 2016a; 2017). It aims to build the recognition of adult community education as a distinct education sector in Australia by profiling the diversity of ACE providers, programs, participants and outcomes. [This article was written by Adult Learning Australia.]