| Smoothies | 201 |
| Snack Products | 201 |
| Social Security Services | 201 |
| Social Service Organizations | 201 |
| Sod & Sodding Service | 203 |
| Sound Systems & Equipment | 203 |
| Sound Systems & Equipment-Renting | 203 |
| Speech & Language Pathologists | 203 |
| Sporting Goods | 203 |
| Sporting Goods-Whsle & Mfrs | 203 |
| Sports Clubs & Organizations | 203 |
| Sports Information | 209 |
| Spraying Equipment | 209 |
| Spraying-Horticultural | 209 |
| Sprinklers-Garden & Lawn | 209 |
| Stables | 209 |
| Stereophonic & High Fidelity Equipment-Dealers | 209 |
| Stock & Bond Brokers | 209 |
| Storage-Household & Commercial | 210 |
| Storefronts | 211 |
| Stucco Contractors | 212 |
| Stucco & Exterior Coat Contractors | 213 |
| Stump Removal | 213 |
| Surgical Appliances & Supplies | 213 |
| Surveyors-Aerial | 213 |
| Surveyors-Land | 213 |
| Swimming Pool Contractors, Dealers & Designers | 213 |
| Swimming Pool Mfrs & Distributors | 215 |
| Synagogues | 215 |
| T |
| T-Shirts | 215 |
| Tanning Salons | 216 |
| Tattooing | 216 |
| Tax Return Preparation | 216 |
| Taxes-Consultants, Representatives | 217 |
| Taxicabs | 217 |
| Taxidermists | 219 |
| Technology-Research & Development | 219 |
| Telecommunications Contractors | 219 |
| Telephone Communications Services | 219 |
| Telephone Companies | 219 |
| Telephone Equipment & Systems-Dealers | 219 |
| Telephone Service-Long Distance | 220 |
| Television Program Producers | 220 |
| Television & Radio-Renting & Leasing | 221 |
| Television Stations & Broadcasting Companies | 221 |
| Tennis Courts-Public | 222 |
| Tennis Equipment & Supplies | 222 |
| Tents | 222 |
| Tents-Renting | 222 |
| Theatres | 224 |
| Theatres-Dinner | 224 |
| Theatres-Stage | 224 |
| Theatrical Agencies | 224 |
| Thrift Shops | 224 |
| Tile-Ceramic-Contractors & Dealers | 224 |
| Tile-Ceramic-Mfrs & Distributors | 226 |
| Tile-Nonceramic-Contractors & Dealers | 226 |
| Time & Temperature Announcements | 226 |