| Satellite Equipment & Systems | 196 |
| Sausages | 196 |
| Sawmills | 196 |
| Saws | 196 |
| School Information | 196 |
| School Uniforms | 197 |
| Schools-Academic-Adult Education | 197 |
| Schools-Academic-Colleges & Universities | 197 |
| Schools-Academic-Preschool & Kindergartens | 197 |
| Schools-Academic-Secondary & Elementary | 198 |
| Schools-Business & Vocational | 199 |
| Schools-General Interest | 200 |
| Schools-Medical & Dental Assistants & | 200 |
| Technicians |
| Schools-Private | 200 |
| Schools-Religious Education | 200 |
| Scrap Metals | 200 |
| Screen Printing | 200 |
| Screens-Door & Window | 200 |
| Seafood | 200 |
| Seafood-Whsle | 200 |
| Seals-Notary & Corporation | 200 |
| Security Consultants | 201 |
| Security Control Equipment, Systems & | 201 |
| Monitoring |
| Security Guard & Patrol Service | 201 |
| Security Systems & Consultants | 201 |
| Self-Defense | 201 |
| Senior Citizens’ Services | 201 |
| Septic Tanks & Systems-Cleaning | 201 |
| Septic Tanks & Systems-Contractors & Dealers | 202 |
| Service Station Equipment & Supplies | 202 |
| Service Stations-Gasoline & Oil | 202 |
| Sewage Treatment Equipment | 203 |
| Sewer Contractors | 203 |
| Sewing Contractors | 203 |
| Sheds | 203 |
| Sheet Metal Work | 203 |
| Sheriff’s Department | 203 |
| Ship Builders & Repairers | 203 |
| Shipyard Repairs | 203 |
| Shoe Repairing | 203 |
| Shoes | 203 |
| Shooting Ranges | 203 |
| Shutters | 203 |
| Siding Contractors | 203 |
| Siding Materials | 203 |
| Signs | 204 |
| Sleep Disorders-Diagnosis & Treatment | 204 |
| Social Service Organizations | 204 |
| Social Services Information & Referral Programs | 206 |
| Spas & Hot Tubs-Dealers | 206 |
| Speech & Language Pathologists | 206 |
| Spices | 206 |
| Sporting Goods | 206 |
| Sports Bars | 207 |
| Sports Clubs & Organizations | 207 |
| Sports Information | 207 |
| Sprinklers-Garden & Lawn | 214 |
| Stadiums, Arenas, & Athletic Fields | 214 |
| Stair Builders | 214 |
| Steel Distributors & Warehouses | 214 |
| Steel Erectors | 214 |
| Steel Fabricators | 214 |
| Stevedoring Contractors | 214 |
| Stock & Bond Brokers | 214 |
| Stone-Crushed | 214 |
| Stone-Natural | 214 |
| Storage-Containers | 214 |