| 423110 | Automobile and Other Motor Vehicle Merchant Wholesalers | 695 |
| 423120 | Motor Vehicle Supplies and New Parts Merchant Wholesalers | 826 |
| 423130 | Tire and Tube Merchant Wholesalers | 160 |
| 423140 | Motor Vehicle Parts (Used) Merchant Wholesalers | 98 |
| 423210 | Furniture Merchant Wholesalers | 629 |
| 423220 | Home Furnishing Merchant Wholesalers | 555 |
| 423310 | Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers | 483 |
| 423320 | Brick, Stone, and Related Construction Material Merchant Wholesalers | 391 |
| 423330 | Roofing, Siding, and Insulation Material Merchant Wholesalers | 174 |
| 423390 | Other Construction Material Merchant Wholesalers | 584 |
| 423410 | Photographic Equipment and Supplies Merchant Wholesalers | 172 |
| 423420 | Office Equipment Merchant Wholesalers | 464 |
| 423430 | Computer and Computer Peripheral Equipment and Software Merchant Wholesalers | 2171 |
| 423440 | Other Commercial Equipment Merchant Wholesalers | 484 |
| 423450 | Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers | 57174 |
| 423460 | Ophthalmic Goods Merchant Wholesalers | 160 |
| 423490 | Other Professional Equipment and Supplies Merchant Wholesalers | 704 |
| 423510 | Metal Service Centers and Other Metal Merchant Wholesalers | 856 |
| 423520 | Coal and Other Mineral and Ore Merchant Wholesalers | 52 |
| 423610 | Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers | 1708 |
| 423620 | Household Appliances, Electric Housewares, and Consumer Electronics Merchant Wholesalers | 433 |
| 423690 | Other Electronic Parts and Equipment Merchant Wholesalers | 1043 |
| 423710 | Hardware Merchant Wholesalers | 1077 |
| 423720 | Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers | 757 |
| 423730 | Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers | 547 |
| 423740 | Refrigeration Equipment and Supplies Merchant Wholesalers | 163 |
| 423810 | Construction and Mining (except Oil Well) Machinery and Equipment Merchant Wholesalers | 475 |
| 423820 | Farm and Garden Machinery and Equipment Merchant Wholesalers | 429 |
| 423830 | Industrial Machinery and Equipment Merchant Wholesalers | 2615 |
| 423840 | Industrial Supplies Merchant Wholesalers | 1720 |
| 423850 | Service Establishment Equipment and Supplies Merchant Wholesalers | 728 |
| 423860 | Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers | 756 |
| 423910 | Sporting and Recreational Goods and Supplies Merchant Wholesalers | 975 |
| 423920 | Toy and Hobby Goods and Supplies Merchant Wholesalers | 278 |
| 423930 | Recyclable Material Merchant Wholesalers | 710 |
| 423940 | Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers | 361 |
| 423990 | Other Miscellaneous Durable Goods Merchant Wholesalers | 2040 |
| 424110 | Printing and Writing Paper Merchant Wholesalers | 135 |
| 424120 | Stationery and Office Supplies Merchant Wholesalers | 640 |
| 424130 | Industrial and Personal Service Paper Merchant Wholesalers | 230 |
| 424210 | Drugs and Druggists' Sundries Merchant Wholesalers | 913 |
| 424310 | Piece Goods, Notions, and Other Dry Goods Merchant Wholesalers | 260 |
| 424340 | Footwear Merchant Wholesalers | 144 |
| 424350 | Clothing and Clothing Accessories Merchant Wholesalers | 785 |
| 424410 | General Line Grocery Merchant Wholesalers | 758 |
| 424420 | Packaged Frozen Food Merchant Wholesalers | 147 |
| 424430 | Dairy Product (except Dried or Canned) Merchant Wholesalers | 104 |
| 424440 | Poultry and Poultry Product Merchant Wholesalers | 62 |
| 424450 | Confectionery Merchant Wholesalers | 166 |
| 424460 | Fish and Seafood Merchant Wholesalers | 153 |
| 424470 | Meat and Meat Product Merchant Wholesalers | 208 |
| 424480 | Fresh Fruit and Vegetable Merchant Wholesalers | 681 |
| 424490 | Other Grocery and Related Products Merchant Wholesalers | 929 |
| 424510 | Grain and Field Bean Merchant Wholesalers | 149 |
| 424520 | Livestock Merchant Wholesalers | 128 |
| 424590 | Other Farm Product Raw Material Merchant Wholesalers | 204 |
| 424610 | Plastics Materials and Basic Forms and Shapes Merchant Wholesalers | 261 |
| 424690 | Other Chemical and Allied Products Merchant Wholesalers | 874 |
| 424710 | Petroleum Bulk Stations and Terminals | 251 |
| 424720 | Petroleum and Petroleum Products Merchant Wholesalers (except Bulk Stations and Terminals) | 1128 |
| 424810 | Beer and Ale Merchant Wholesalers | 186 |
| 424820 | Wine and Distilled Alcoholic Beverage Merchant Wholesalers | 581 |
| 424910 | Farm Supplies Merchant Wholesalers | 440 |
| 424920 | Book, Periodical, and Newspaper Merchant Wholesalers | 195 |
| 424930 | Flower, Nursery Stock, and Florists' Supplies Merchant Wholesalers | 258 |
| 424940 | Tobacco Product and Electronic Cigarette Merchant Wholesalers | 168 |
| 424950 | Paint, Varnish, and Supplies Merchant Wholesalers | 131 |
| 424990 | Other Miscellaneous Nondurable Goods Merchant Wholesalers | 1633 |
| 425120 | Wholesale Trade Agents and Brokers | 2567 |