This paper explores the relationship between neighbourhood level density of civil society organisations (CSOs), diversity, and deprivation. We compare the UK and Sweden, two countries with different civil society traditions and welfare state regimes. We use data on formal civil society organisations to examine whether diverse neighbourhoods have lower levels of civil society infrastructure. In the UK, contrary to what could be expected from Putnam's assertion that diversity has a negative effect on trust, thus limiting civil society activities at the neighbourhood level, we observe a positive relationship between the density of CSOs and diversity. In Sweden, we find different patterns. First, we observe a negative correlation between CSO density and diversity. Second, we find lower density of formal CSOs in areas with high diversity and high economic disadvantage and higher density in areas characterised by low diversity and high disadvantage.