- Sandblasting, Caledonia - General Contractors
- Sandwich Shop Restaurants, Caledonia
- Sawmill & Planing Mills, Caledonia
- Sawmill Supplies & Equipment Repair, Caledonia
- School - Catholic, Caledonia
- School - Christian, Caledonia
- Sealants Retail, Caledonia
- Sealcoating, Caledonia - Asphalt Sealcoating & Paving
- Secondary Schools, Caledonia
- Security Brokers & Dealers, Caledonia
- Septic Tank Pumping & Cleaning, Caledonia - Septic Systems
- Shooting & Target Ranges, Caledonia
- Shopping & Shopping Services, Caledonia
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- Small Engine Parts Wholesale, Caledonia
- Social Services & Welfare, Caledonia
- Specialty Stores, Caledonia
- Sporting Goods Stores, Caledonia
- State Government, Caledonia
- Steel & Metal Goods, Caledonia - Steel Distributors
- Steel Manufacturers, Caledonia
- Steel Mills & Blast Furnaces, Caledonia
- Stocks & Bond Brokers, Caledonia
- Stone & Rock Quarry, Caledonia - Gravel Pit, Shale, Granite, Limestone, Crushed Rock, etc
- Substance Abuse Clinics, Caledonia - Alcoholism, Addiction & Drug Abuse Treatment Centers
- Supper Club Restaurants, Caledonia
- Surveyor Services, Caledonia - Surveying Service
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