By the time the Migration reached its conclusion, sociologists would have a name for that kind of hard-core racial division. They would call it hypersegregation, a kind of separation of the races that was so total and complete that blacks and whites rarely intersected outside of work. The top ten cities that would earn that designation after the 1980 census (the last census after the close of the Great Migration, which statistically ended in the 1970s) were, in order of severity of racial isolation from most segregated to least: (1) Chicago, (2) Detroit, (3) Cleveland, (4) Milwaukee, (5)
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