- U-Haul Truck Rental, Charleston - U-Haul Moving
- U-Haul Trucks, Charleston - Uhaul Truck Rental
- U.S. Postal Service, Charleston
- Underground Bituminous Coal, Charleston
- Underground Utility Locating Service, Charleston
- Unemployment Compensation Consultants, Charleston
- Uniforms, Charleston
- Uniforms, Work Clothes & Safety Clothing, Charleston
- Union Church, Charleston
- Unitarian Universalist Churches, Charleston
- United States Air Force, Charleston
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- Unity Church, Charleston
- Universal Joints, Charleston
- Urologists, Charleston - Urology Doctors, Physicians & Surgeons
- Used Book Stores, Charleston - New & Rare Books
- Used Cars, Truck, Van & SUV Car Dealerships, Charleston
- Used Furniture Stores, Charleston - Used Office, Patio, Hotel, Baby & Bedroom Furniture Dealers
- Used Merchandise, Resale Shops & Thrift Stores, Charleston
- Utilities, Charleston
- Utilities Contractors, Charleston
- Utility Installation Contractors, Charleston
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