Europe is currently dealing with a major influx of migrants and refugees. Every week, thousands of people are risking their lives for the opportunity to create a better future in Europe, notably in Germany and Sweden. Immigration is only the first challenge however. Once basic needs have been addressed, the arguably greater challenge of integration begins. This Nordregio policy brief presents a new way of measuring segregation – the diversity index – and outlines key steps that Botkyrka, a highly diverse municipality in the Stockholm County, has taken to alleviate Poverty and Social Exclusion, which could be instructive to municipalities across Europe, as they work to integrate new residents.