According to our records, this business is located at 3 Mill Rd # 200 in Wilmington (in New Castle County), Delaware 19806, the location GPS coordinates are: 31.8572795 (latitude), -92.3060058 (longitude). Harbor Management Service is categorized under Extended Care Facilities (SIC code 8051). Known organization owner is Stephen Silver. Current estimates show that the unit has a sales volume of $980,000 and staff of approximately 20 people. You can contact the company by phone at (302) 427-9470; the following fax number is also provided: (302) 427-9826.