Mimico's longest-serving mayor (at different periods from 1936–1948) was Amos Waites, who alternated in this post with Mayor Archibald Norris. About the time of the Second World War many 1-storey houses were built, filling in most of the gaps in the housing especially in northern and western Mimico. Many new immigrants came to Mimico in the 1950s. In 1953, Mimico became one of thirteen cities and towns which formed the new Metropolitan Toronto. The next year Hurricane Hazel struck and while communities around Mimico were some of the worst affected, the storm left Mimico largely untouched. The Town of Mimico saw its future in attracting many more small families and working people to the area and began to tear down older homes that stood on large lots and filled in these and the last remaining empty lots with apartment buildings.