In the timeframe you are looking at, Youngstown was considered wide open territory, hence they had representatives from Buffalo (185 miles away), Detroit (200 miles away), Cleveland (60 miles away) and Pittsburgh (50 miles away). Vince DeNiro and Cadillac Charlie Cavallaro were both connected to Cleveland, but Vince DeNiro was truly an independent numbers boss, hence why they blew him up in a car bomb known as a "Youngstown Tune Up" because he wasn't kicking up to any of the families who were demanding a piece of his numbers business.