Visit Twin City Supermarket for all of your international and Central American grocery needs. Twin City Supermarket is your source for hard to find groceries and food items native to countries like Columbia, Ecuador, Peru, and Costa Rica. Our international market serves patrons in and around Union County and Essex County looking for an international supermarket that will suit all of their needs. Our Hispanic market is perfect for anyone in Elizabeth, NJ, Union County, Essex County, Hudson County, Morris County or Middlesex County.