Non-profit Civil Society organizations play a crucial role in fostering trust-building and social integration within segregated, divided, and polarized societies. In Sweden, segregation due to the socioeconomic disadvantages faced by migrants has been a persistent issue. This study explores the role of civil society organizations in promoting the social integration of ethnic minorities and migrant populations within the broader community of Stockholm city residents. The research focuses on two primary objectives: examining how civil society organizations address segregation and division in Stockholm, particularly in its suburbs, and identifying effective actions that promote enduring social integration. A qualitative methodology was employed, involving semi-structured interviews with four chairpersons of civil society organizations in Stockholm suburbs. The findings indicate that these organizations utilize cultural exchange events and other mutual benefit activities to advance their social integration agendas, emphasizing the importance of providing equal opportunities regardless of ethnic background and economic status. Additionally, these organizations are active in helping policymaking efforts aimed at introducing significant policy changes to enhance integration.