Shrewsbury St was the Worcester's Little Italy, Green Island, hemmed in by Millbury St, Quinsigamond Ave and Green Island Blvd, was Polish, Vernon Hill was Lithuanian, Main South was densely Irish but also somewhat Franco American, Greendale was predominantly Swedish, Water St, Columbia St, Harrison St and Providence St hemmed in the Jewish section. Worcester's west side was once inhabited by wealthy WASPS but many Jews eventually migrated there. Summer St and the area that is now Plummley Village was mostly Blacks. Hispanics came late to Worcester, (mid 1960s) and then only Cubans who were the only Caribbean representatives until the 1970s. This is based on my recollections from the 50s,60s,70s. Worcester certainly had many other ethnic groups but the numbers did not rise enough to cover broad areas and did not own ethnic businesses. Worcester hasn't had ethnically dense areas for a long time.