| Churches in Mercer, MO (7) | Cattle Ranching in Mercer, MO (6) |
| Corn Farm Whol Livestock Soybean Farm in Mercer, MO (3) | Schools in Mercer, MO (3) |
| Automobile Repairing & Service in Mercer, MO (2) | Beauty Salons in Mercer, MO (2) |
| County Government - Conservation Depts in Mercer, MO (2) | Farms in Mercer, MO (2) |
| Religious Organization in Mercer, MO (2) | Restaurants in Mercer, MO (2) |
| Soybean Farm Corn Farm in Mercer, MO (2) | Administrative Educational Programs in Mercer, MO (1) |
| Aerial Applicators in Mercer, MO (1) | Automotive Repair & Service in Mercer, MO (1) |
| Banks in Mercer, MO (1) | Baskets in Mercer, MO (1) |
| Beauty Shop in Mercer, MO (1) | Bulldozing in Mercer, MO (1) |
| City Government - Environmental Programs in Mercer, MO (1) | City Government - Executive Offices in Mercer, MO (1) |
| Clinics in Mercer, MO (1) | Computer Maintenance Repair in Mercer, MO (1) |
| Computer Related Services in Mercer, MO (1) | Computer Software in Mercer, MO (1) |
| Computers - Service & Repair in Mercer, MO (1) | Concrete Contractor in Mercer, MO (1) |
| Convenience Stores in Mercer, MO (1) | Dimension Stone Quarry Lawn Garden Services in Mercer, MO (1) |
| Environmental Excavating Contractor in Mercer, MO (1) | Feed - Dealers (Wholesale) in Mercer, MO (1) |
| Fire Departments in Mercer, MO (1) | Foods - Carry Out in Mercer, MO (1) |
| General Animal Farm in Mercer, MO (1) | General Crop Farm in Mercer, MO (1) |
| General Livestock Farm in Mercer, MO (1) | Gifts Novelties in Mercer, MO (1) |
| Grocery Stores in Mercer, MO (1) | Guns & Gunsmiths in Mercer, MO (1) |
| Lumber - Retail in Mercer, MO (1) | Lumber Yard Wooden Roof Trusses in Mercer, MO (1) |
| Newspapers (Publishers) in Mercer, MO (1) | Newspapers - Publishing Printing in Mercer, MO (1) |
| Pony Farm in Mercer, MO (1) | Post Offices in Mercer, MO (1) |
| Prepackaged Software Services in Mercer, MO (1) | Quilting in Mercer, MO (1) |
| Real Estate in Mercer, MO (1) | Real Property Lessor Vegetable Melon Farm in Mercer, MO (1) |
| Restaurant in Mercer, MO (1) | Retreat Houses in Mercer, MO (1) |
| Rock (Wholesale) in Mercer, MO (1) | Sharpening Service in Mercer, MO (1) |
| Snack Products in Mercer, MO (1) | Sporting Goods & General Contractor in Mercer, MO (1) |
| Spraying - Horticultural in Mercer, MO (1) | State Bank in Mercer, MO (1) |
| Transportation Services in Mercer, MO (1) | Trucking in Mercer, MO (1) |
| Us Postal Service in Mercer, MO (1) | Water & Sewage Companies - Utility in Mercer, MO (1) |
| Welding in Mercer, MO (1) |
