This study examines the relationship between the use of Facebook and the formation and maintenance of social capital among college students. A survey of 286 undergraduate students found that Facebook usage was strongly associated with three types of social capital: bonding, bridging, and maintained. Bonding capital refers to relationships with strong ties like close friends and family, while bridging capital involves weaker ties that are useful for accessing new information and opportunities. Maintained capital assesses one's ability to stay connected to their community after leaving it. Facebook usage interacted with measures of psychological well-being, suggesting greater benefits for users with low self-esteem or life satisfaction.