- Sand Gravel & Aggregate, Yerington
- Sandwich Shop Restaurants, Yerington
- Satellite Communication Downlinking & Uplinking, Yerington
- Savings Banks, Yerington
- Scientific & Laboratory Equipment & Instruments, Yerington
- Screen Printing, Yerington
- Senior Citizen Counseling, Yerington
- Senior Citizens Service & Health Organizations, Yerington
- Service & Gas Station Equipment & Services, Yerington
- Sharpening Service, Yerington
- Shopping & Shopping Services, Yerington
- Social Services & Welfare, Yerington
- Sod & Sodding Service, Yerington
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- Sod Farms, Yerington
- Solar Energy Companies - Contractors, Yerington - Solar Panel Installation - Solar Power Systems
- Specialty Animal Services, Yerington
- Specialty Stores, Yerington
- Sporting Goods Stores, Yerington
- State Government, Yerington
- State Highway Patrol, Yerington
- State Law Enforcement, Yerington
- Stoves & Furnace Equipment, Yerington - Fittings & Repair Parts
- Substance Abuse Clinics, Yerington - Alcoholism, Addiction & Drug Abuse Treatment Centers
- Surveyor Services, Yerington - Surveying Service
- Surveyors, Yerington
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