Research has substantiated that social isolation and loneliness are linked to poorer health, earlier death, and reduced quality of life among older adults. Although there has been research focusing on social networks of nursing home residents and interventions to decrease loneliness and improve social interactions for older adults in varied settings, there is a gap in research relating to social networks of older adults in assisted living and retirement communities. The goal of the current review was to summarize relevant research findings related to this topic published in the past 5 years. The literature review included searching three electronic databases (CINAHL, EBSCOhost, and PubMed) for research articles published between January 2015 and March 2020. A total of 475 articles were identified, which was narrowed to 16 articles included for full review after inclusion and exclusion criteria were applied. Following analysis, three themes were identified in the literature: Social Connections Within an Assisted Living Community, Social Networks Between Residents and Their Adult Children, and Influence of Physical Structure on Social Networks of Residents.