| Corn Farm Whol Livestock Soybean Farm in Potomac, IL (14) | Churches in Potomac, IL (3) |
| General Crop Farm in Potomac, IL (3) | Banks in Potomac, IL (2) |
| Fertilizers - Retail in Potomac, IL (2) | Government Offices in Potomac, IL (2) |
| Schools in Potomac, IL (2) | Ambulance Service in Potomac, IL (1) |
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| Automobile Body - Repairing & Painting in Potomac, IL (1) | Automobile Wrecking (Wholesale) in Potomac, IL (1) |
| Business Construction Services in Potomac, IL (1) | Cemetery Subdivider Developer Funeral Service Crematory in Potomac, IL (1) |
| Child Day Care Services in Potomac, IL (1) | Communications in Potomac, IL (1) |
| Farms in Potomac, IL (1) | Fencing Contractors in Potomac, IL (1) |
| Fire Departments in Potomac, IL (1) | Fraternal Organizations in Potomac, IL (1) |
| Gas Companies in Potomac, IL (1) | Grain - Dealers (Wholesale) in Potomac, IL (1) |
| Grain Elevators in Potomac, IL (1) | House Construction Contractors in Potomac, IL (1) |
| Landscape Contractors in Potomac, IL (1) | Libraries - Public in Potomac, IL (1) |
| Library in Potomac, IL (1) | Library Executive Office in Potomac, IL (1) |
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| Police Departments in Potomac, IL (1) | Post Offices in Potomac, IL (1) |
| Real Estate Investments in Potomac, IL (1) | Real Property Lessor Vegetable Melon Farm in Potomac, IL (1) |
| Retreat Houses in Potomac, IL (1) | Service Stations - Gasoline & Oil in Potomac, IL (1) |
| Services in Potomac, IL (1) | Soybean Farm Corn Farm in Potomac, IL (1) |
| State Bank in Potomac, IL (1) | Tanning Salons in Potomac, IL (1) |
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| Trucking Operator - Nonlocal in Potomac, IL (1) | Us Postal Service in Potomac, IL (1) |
| Vegetable Melon Farm in Potomac, IL (1) | Water & Sewage Companies - Utility in Potomac, IL (1) |
| Whol Farm Supplies Pest Control in Potomac, IL (1) | Whol Livestock Beef Cattle - Except Feedlot in Potomac, IL (1) |
| Wholesalers in Potomac, IL (1) |
