In Millville Gateway Community Action Partnership, which operates the Special Supplemental Nutrition Program for Women, Infants & Children in Atlantic, Camden, Cape May, Cumberland and Salem counties, will close its WIC office at 811 W. Main St. on April 27.Beginning May 4, local clients can visit the group’s locations in Vineland at 610 E. Montrose St. or Bridgeton at 10 Washington St.