According to our records, this business is located at 2201 N Market St. in Wilmington (in New Castle County), Delaware 19802, the location GPS coordinates are: 39.7528263 (latitude), -75.5399239 (longitude). Preferred Business Service is categorized under Accounting and Bookkeeping Services (SIC code 8721). Known organization owner is Ed Swan. Current estimates show that the unit has a sales volume of $412,000 and staff of approximately 4 people. You can contact the company by phone at (302) 654-9965.