Libraries face evolving communities and must constantly reorient themselves to serve new needs. This article examines the impact of emerging immigrant communities on library services. It discusses the emergence of library services to immigrants and the diverse faces of these services, which may include foreign language collections, access to technology and connections with local services, as appropriately determined through community analysis. The Atwater Library and Computer Centre in Montréal, Québec is examined as a case study of community analysis informing service reorientation. This article will be useful for organizations working with immigrants or community service providers confronted with changing demographics.