Many Sicilians arrived in Chicago between 1880 and 1914.
Today the Italian community in Chicagoland is the 3rd largest in the US after New York and Philadelphia, and just slightly larger than that of Boston.
The city of Chicago was built by many Italian immigrants. Along with the railroad industry in Chicago and the Union stockyards in the meatpacking industry. Plus the best barbershops, shoe repair and tailors belonged to Italian ownership. Dont forget bakeries as well.