the post world war ii era and the construction of interstate 84 caused the industrial base of parkville to evaporate. the more established middle-class families began to move to the suburbs, and were replaced by new immigrants and people moving from other parts of the city. by the mid 1960s the portuguese community had made parkville its home, establishing small businesses along park street. today, the neighborhood has a large population of brazilians, puerto ricans, caribbean and american blacks.