- Economic Development, Troy
- Education, Troy
- Electric Companies, Troy
- Electric Motor Repair & Service, Troy
- Electronics Manufacturers, Troy
- Electronics Repair & Maintenance , Troy
- Electronics Stores, Troy
- Elementary Schools, Troy
- Embossing, Stamping & Engraving, Troy
- Emergency Services, Troy
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- Emergency Vehicle Accessories, Troy
- Emergency Victim Services, Troy
- Employment Agencies, Troy - Staffing Agencies
- Employment Agencies General Labor, Troy
- Employment Assistance, Troy
- Employment Services, Troy
- Engineer & Architect Services, Troy - Engineering & Architecture Service
- Entertainment & Recreation, Troy
- Episcopal Churches, Troy
- Excavation Contractors, Troy - Excavating - Excavator Companies
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