The present study investigated individual-level determinants of community social capital among older adults in urban China, with a particular emphasis on health and family social capital. A quota sampling method was used to select 456 adults aged 60 or older from 16 local communities in the city of Suzhou in 2015. Multiple indicators and multiple courses in structural equation modeling were used to examine the proposed model. Latent constructs of community social capital (i.e., cognitive social capital and structural social capital) were established. The results showed that family social capital and instrumental activities of daily living were the most influential determinants of cognitive social capital, whereas activities of daily living and socioeconomic status were the most important determinants of structural social capital. We demonstrate the application of social capital theory in an urban Chinese context. Future policy development and social work interventions should use a more comprehensive social capital latent constructs and health indicators as screening instruments. The promotion of family social capital could play an important role in enhancing cognitive social capital among older adults.