The Home Depot is a home improvement specialty retailer with stores in all 50 states, the District of Columbia, Puerto Rico, U.S. Virgin Islands, 10 Canadian provinces, Mexico & China. Departments: Appliances, Bath, Building Materials, Décor, Doors & Windows, Electrical, Flooring, Kitchen, Lighting & Fans, Lumber & Composites, Outdoors, Paint, Plumbing, Storage & Organization, Tools & Hardware.