 According to a recent United Census Bureau estimate, 17.8 million Americans are of Italian descent.Communities of Italian Americans were established in many major industrial cities of the early 20th century, such as Baltimore (particularly Little Italy, Baltimore), Boston (particularly in the North End), Philadelphia proper (particularly South Philadelphia) and the Philadelphia metro area (particularly neighborhoods in Delco, Atlantic City, Little Italy, Wilmington; and Vineland), Pittsburgh (particularly Bloomfield), Northeastern Pennsylvania cities, Lehigh Valley cities, Detroit, Providence (particularly Federal Hill), St. Louis (particularly The Hill), Chicago, Kansas City, Milwaukee, Youngstown, Erie, Cleveland, Buffalo, Newark, and New York City, which boasts the largest Italian-American population, which live in several concentrated communities in the New York metropolitan area, including the five boroughs, Long Island, and Westchester.New Orleans, Louisiana was the first site of immigration of Italians into America in the 19th century, before Italy was a unified nation-state.