- Dairy Products - Wholesale & Retail, Upland
- Dance Companies, Upland
- Data Processing Services, Upland
- Day Spas, Upland
- Decorating & Designing Services, Upland
- Decorative & Stamped Concrete, Upland
- Delicatessen Restaurants, Upland
- Delivery & Errand Services, Upland
- Demolition Consultants, Upland - Demolition Contractors
- Demolition Work, Upland
- Denomination, Non-Denominational, Etcetera, Upland
- Dental Bonding & Cosmetic Dentistry, Upland - Cosmetic Dentist & Tooth Bonding
- Dental Equipment Repair & Refinish, Upland
- Dental Supplies & Equipment, Upland
- Dentists, Upland
- Department Stores, Upland
- Dermatologists, Upland - Skin Doctors, Physicians & Surgeons (Dermatology)
- Designer Clothes & Accessories, Upland
- Desktop Publishing, Upland
- Developmental Children Services, Upland
- Dialysis Clinics, Upland - Kidney Dialysis Centers
- Dictating Machines, Upland
- Diet Centers, Upland
- Dieticians & Diet Counseling, Upland
- Digital Imaging Photographers, Upland
- Digital Printing & Imaging Service, Upland
- Diner Restaurants, Upland
- Direct Mail Advertising Services, Upland
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- Disc Jockeys, Upland
- Disciples Of Christ Church, Upland
- Discount Stores, Upland - Clothing, Grocery, Furniture, Etc
- Dispensing Machines, Upland
- Displays & Display Installation Service, Upland - Trade Show Displays
- Divorce & Family Law Attorneys & Lawyers, Upland
- Doctorate Degree, Upland
- Doctors, Physicians & Surgeons, Upland
- Doll Houses, Upland
- Doll Repair & Restoration, Upland
- Dolls, Doll Houses & Accessories , Upland
- Donuts, Upland
- Door & Gate Operating Devices, Upland
- Doors & Door Frames, Upland - Exterior, Interior, French, Front Entry, Patio, Storm, Garage & Sliding Glass Doors
- Doors & Door Frames Manufacturers, Upland
- Doors & Windows Manufacturers, Upland
- Drapery Blinds & Shades Installation & Repair, Upland
- Drinking Establishments, Upland
- Driveway, Parking Lot & Blacktop Contractors, Upland - Construction, Repair & Maintenance
- Drugs, Pharmaceutical Products & Toiletries - Wholesale & Manufacturers, Upland
- Dry Cleaning & Laundry, Upland - Dry Cleaners
- Dryer Vent Cleaning, Repair & Installation, Upland
- Dryers Sales, Service & Repair, Upland - Gas & Electric
- Drywall Contractors, Upland - Drywall Repair & Installation Services
- Drywall Equipment & Supplies, Upland
- Drywall, Insulation & Plaster Contractors, Upland - Installation & Repair Services
- Durable & Non Durable Goods & Products, Upland
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