- Dance Companies, Collegeville
- Day Spas, Collegeville
- Delicatessen Restaurants, Collegeville
- Denomination, Non-Denominational, Etcetera, Collegeville
- Dental Hygienists, Collegeville
- Dentists, Collegeville
- Department Stores, Collegeville
- Developmental Disabilities, Collegeville
- Developmentally Disabled Information & Services, Collegeville
- Diner Restaurants, Collegeville
- Disc Jockeys, Collegeville
- Discount Stores, Collegeville - Clothing, Grocery, Furniture, Etc
- Dishwashers Sales, Service & Repair, Collegeville
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- Displays & Display Installation Service, Collegeville - Trade Show Displays
- Doctorate Degree, Collegeville
- Doctors, Physicians & Surgeons, Collegeville
- Donuts, Collegeville
- Drinking Establishments, Collegeville
- Drive In Restaurants, Collegeville
- Drugs & Pharmaceutical Supplies, Collegeville
- Drugs, Pharmaceutical Products & Toiletries - Wholesale & Manufacturers, Collegeville
- Dry Cleaning & Laundry, Collegeville - Dry Cleaners
- Dryers Sales, Service & Repair, Collegeville - Gas & Electric
- Drywall, Insulation & Plaster Contractors, Collegeville - Installation & Repair Services
- Durable & Non Durable Goods & Products, Collegeville
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