This study examines the extent to which engagement within civil society relates to various forms of social trust among residents in local communities that received varying shares of asylum seekers during the European refugee crisis of 2015 to 2017. The study is based on a representative survey collected from individuals within 36 local Swedish communities that received very different shares of asylum seekers. The result suggests that engagement in civil society organizations moderates community trust under conditions of increased diversity. Outgroup trust varies with the share of asylum seekers only among those not involved in civil society. The results also suggest that involvement in civil society does not moderate generalized trust if the share of asylum seeker varies.