Familiar strangers, individuals who are visually recognisable yet do not engage in verbal conversations, emerge in communal urban places on the way and in between regular daily activities in the home and workplace. Described as invisible social ties and light touch community, familiar strangers represent an understudied and untapped source of sociality that offer promise by way of an antidote to the global increase in reports of loneliness. In this study, we examine the extent to which familiar stranger encounters in communal everyday places might act as an important source of social identity, belonging and perceived attachment. We estimate regression models using data from a 2022 intercept survey of 278 residents in Brisbane, Australia conducted in situ at public parks, transit stations, retail environments, and thoroughfares to estimate the influence of familiar strangers and frequency of visitation on sense of belonging and place attachment. Our results show belonging emerges through familiar stranger encounters in everyday communal places outside of the residential neighbourhood and suggest that coupling urban design features that enhance visible proximity with scheduling that encourages repeated, synchronised visitation can contribute to bounded communities of belonging at everyday communal places.