Two examples of community engagement in Australian public libraries, drawn from the author’s experience, are analysed using Sung and Hepworth’s (2013) community engagement model for public libraries and Overall’s (2009) definition of cultural competence in a library and information science framework. The examples are examined for the community engagement characteristics identified by Sung and Hepworth; each is also considered for cultural competence, using the domains which Overall posits are the sites where this competence occurs or is developed. A virtuous circle of community engagement is extrapolated from the second example. ‘Hierarchical equivalence’ between organizations, a group’s proportional presence in a population and the nature of each group’s aims, are suggested as further factors in sustainable community engagement. That culture is an asset on which communities draw to engage with libraries and the broader community, and that communities will respond to engagement approaches if they offer the possibility of meeting community aspirations, is evident in both examples.