- Hair Care Professionals, Fairfield
- Hamburger Restaurants, Fairfield
- Hardware Stores, Fairfield
- Health & Diet Food Products - Wholesale & Retail, Fairfield
- Health & Medical, Fairfield
- Health And Medical Centers, Fairfield
- Health Clubs & Gymnasiums, Fairfield
- Healthcare Providers, Practitioners & Professionals, Fairfield
- Heating & Air-Conditioning Contractors, Fairfield - HVAC Contractors - Installation, Repair, Replace Service, etc
- Home & Garden Products, Fairfield
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- Home Additions & Remodeling Contractors, Fairfield - Refinishing & Restoration
- Home Appliance Repair, Sales & Services, Fairfield
- Home Decor Stores, Fairfield - Home Decorations, Supplies & Accessories
- Home Health Care, Fairfield - Agencies & Services
- Home Security Products, Fairfield
- Hospitals, Fairfield
- Hot Dog Restaurants, Fairfield
- Hotels & Motels, Fairfield
- Household Goods & Furniture Storage , Fairfield
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