Data for Integration of migrants (D4I). The Data for Integration (D4I) dataset was obtained through a spatial disaggregation of statistics of the 2011 Census, collected from National Statistical Institutes. The results of the spatial processing of the original data is a uniform grid showing the concentration of migrants in cells of 100 by 100 m in all cities of eight European countries (France, Germany, Ireland, Italy, Netherlands, Portugal, Spain, and the United Kingdom).