- Sand Gravel & Aggregate, Winfield
- Sandwich Shop Restaurants, Winfield
- Savings Banks, Winfield
- Scales Weighing Service, Winfield
- Screen Printing, Winfield
- Seafood Restaurants, Winfield
- Secondary Schools, Winfield
- Security Brokers & Dealers, Winfield
- Senior Citizens Service & Health Organizations, Winfield
- Shoe Store - More, Winfield
- Shoe Stores, Winfield - Mens, Womens & Kids Shoes
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- Shopping & Shopping Services, Winfield
- Snack Foods, Winfield
- Social Services & Welfare, Winfield
- Sound Systems, Microphones & Equipment, Winfield
- Soup & Salad Restaurants, Winfield
- Specialty Stores, Winfield
- Sporting Goods Stores, Winfield
- State Government, Winfield
- Steak House Restaurants, Winfield
- Substance Abuse Clinics, Winfield - Alcoholism, Addiction & Drug Abuse Treatment Centers
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