- Education, Havertown
- Educational Consultants, Havertown
- Educational Consultants, Havertown
- Educational Program Administration, Havertown
- Educational, Philanthropic & Research Foundations, Havertown
- Electric Companies, Havertown
- Electric Meter Services, Havertown
- Electric Power Systems Contractors, Havertown
- Electrical Connectors, Havertown
- Electrical Control Systems & Materials, Havertown
- Electrical Power Systems Testing & Maintenance, Havertown
- Electrical Supplies, Parts & Equipment, Havertown - Wholesale & Manufacturers
- Electricians, Havertown - Electrical Contractors
- Electronic Games Manufacturers, Havertown
- Electronics Repair & Maintenance , Havertown
- Electronics Stores, Havertown
- Elementary Schools, Havertown
- Emergency Rooms, Havertown - Urgent Care Centers
- Emergency Services, Havertown
- Emergency Victim Services, Havertown
- Employment Agencies, Havertown - Staffing Agencies
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- Employment And Labor Relations Attorneys & Lawyers, Havertown
- Energy Conservation Consultants, Havertown
- Energy Services, Havertown
- Engine Rebuild, Repair & Exchange, Havertown
- Engineer & Architect Services, Havertown - Engineering & Architecture Service
- Engineering Consultants, Havertown - Consulting Engineers
- ENT, Havertown - Ears Nose & Throat Doctors, Physicians & Surgeons
- Entertainment & Recreation, Havertown
- Entertainment Equipment & Supplies, Havertown
- Environmental Conservation & Ecological Services, Havertown - Ecosystem Services
- Environmental Groups, Havertown
- Environmental Products, Havertown
- Environmental Services, Havertown
- Episcopal Churches, Havertown
- Equipment Installation Contractors, Havertown
- Estate And Property Attorneys & Lawyers, Havertown
- Estate And Property Attorneys & Lawyers, Havertown
- Estate And Property Lawyers & Attorneys, Havertown
- Ethnic Goods & Products Stores, Havertown
- Excavation Contractors, Havertown - Excavating - Excavator Companies
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