 The later part of the decade saw the Heath Town district almost completely redeveloped with multi-story flats and maisonette blocks.By 1975, by which time Wolverhampton had also taken in the majority of the former districts of Bilston, Wednesfield and parts of Willenhall, Sedgley and Coseley, almost a third of Wolverhampton's population lived in council housing, but since that date social housing has been built on a minimal scale in the area, and some of the 1919–1975 developments have since been demolished.Large numbers of black and Asian immigrants settled in Wolverhampton in the 1940s, 1950s and 1960s.