| Rubber Stamps | 397 |
| Rubbish & Garbage Removal | 397 |
| S |
| Safe Deposit Box Rental | 397 |
| Safes & Vaults | 397 |
| Safes & Vaults-Opening & Repairing | 397 |
| Safety Consultants | 397 |
| Safety Equipment & Clothing | 397 |
| Sales Counselors | 397 |
| Sales Promotion Service | 397 |
| Salt | 398 |
| Sand & Gravel | 398 |
| Sand Pumping | 398 |
| Sandwiches | 398 |
| Satellite Dishes-Television | 398 |
| Satellite Equipment & Systems | 398 |
| Satellite Equipment & Systems-Mfrs | 398 |
| Sauna Equipment & Supplies | 398 |
| Sausages | 398 |
| Savings & Loan Associations | 398 |
| Scaffolding & Aerial Lifts | 400 |
| School Information | 400 |
| Schools-Academic-Colleges & Universities | 400 |
| Schools-Academic-Preschool & Kindergartens | 407 |
| Schools-Academic-Secondary & Elementary | 407 |
| Schools-Academic-Special Education | 410 |
| Schools-Business & Vocational | 410 |
| Schools-Cooking | 411 |
| Schools-General Interest | 411 |
| Schools-Medical & Dental Assistants & | 411 |
| Technicians |
| Schools-Parochial-Academic | 411 |
| Schools-Private | 411 |
| Schools-Religious Education | 412 |
| Schools-Theatrical | 412 |
| Scrap Metals | 412 |
| Screen Enclosures | 412 |
| Screen Printing | 412 |
| Screens | 413 |
| Screens-Door & Window-Repairing | 413 |
| Sculptors | 413 |
| Seafood | 413 |
| Seafood-Whsle | 413 |
| Secondhand Stores | 413 |
| Secretarial Services | 413 |
| Security Consultants | 413 |
| Security Control Equipment, Systems & Monitoring | 413 |
| Security Guard & Patrol Service | 414 |
| Security Systems & Consultants | 414 |
| Seismograph Service | 414 |
| Self-Defense | 414 |
| Seminaries | 414 |
| Senior Citizens’ Services | 414 |
| Septic Tanks & Systems- Contractors & Dealers | 414 |
| Septic Tanks & Systems-Cleaning | 414 |
| Service Station Equipment & Supplies | 414 |
| Service Stations-Gasoline & Oil | 414 |
| Sewage Disposal Systems | 415 |
| Sewage Plant Operation | 415 |
| Sewage Treatment Equipment | 415 |