- Dairy Products - Wholesale & Retail, Port Townsend
- Dams, Waterways, & Docks Contractors, Port Townsend
- Dance Companies, Port Townsend
- Data Recovery Services, Port Townsend - Hard Drive Data Recovery, etc
- Day Spas, Port Townsend
- Decorating & Designing Services, Port Townsend
- Delicatessen Restaurants, Port Townsend
- Dental Bonding & Cosmetic Dentistry, Port Townsend - Cosmetic Dentist & Tooth Bonding
- Dentists, Port Townsend
- Developmental Disabilities, Port Townsend
- Direct Mail Advertising Services, Port Townsend
- Dirt, Port Townsend
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- Disabled Persons Assistive Services, Port Townsend
- Divorce & Family Law Attorneys & Lawyers, Port Townsend
- Doctorate Degree, Port Townsend
- Doctors, Physicians & Surgeons, Port Townsend
- Drainage Contractors, Port Townsend - Install & Repair Drainage Systems
- Drinking Establishments, Port Townsend
- Dry Cleaning & Laundry, Port Townsend - Dry Cleaners
- Drywall, Insulation & Plaster Contractors, Port Townsend - Installation & Repair Services
- DUI Attorneys & Lawyers, Port Townsend - DWI - Drunk Driving
- Durable & Non Durable Goods & Products, Port Townsend
- Durable Goods & Products, Port Townsend
- Dwelling Operators Except Apartment, Port Townsend
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