| Corn Farm Whol Livestock Soybean Farm in Clark, SD (20) | Government Offices - County in Clark, SD (20) |
| Cattle Ranching in Clark, SD (11) | Churches in Clark, SD (10) |
| Wheat Farm in Clark, SD (8) | General Crop Farm in Clark, SD (7) |
| Government Offices in Clark, SD (6) | Real Property Lessor Vegetable Melon Farm in Clark, SD (6) |
| Schools in Clark, SD (6) | Insurance in Clark, SD (5) |
| Banks in Clark, SD (4) | County Government - Finance & Taxation in Clark, SD (4) |
| Dairy Farm in Clark, SD (4) | Restaurants in Clark, SD (4) |
| Retreat Houses in Clark, SD (4) | Ambulance Service in Clark, SD (3) |
| Automobile Parts & Supplies - Retail - New in Clark, SD (3) | Beauty Salons in Clark, SD (3) |
| Beauty Shop in Clark, SD (3) | Convenience Stores in Clark, SD (3) |
| General Contractors in Clark, SD (3) | Grain Elevators in Clark, SD (3) |
| Insurance Agent Broker in Clark, SD (3) | Machine Shops in Clark, SD (3) |
| Manufacturers in Clark, SD (3) | Plumbing Heating AC Contractor in Clark, SD (3) |
| Trucking in Clark, SD (3) | Attorneys & Lawyers in Clark, SD (2) |
| Auctioneers in Clark, SD (2) | Bars in Clark, SD (2) |
| Cattle Feedlot in Clark, SD (2) | Child Day Care Services in Clark, SD (2) |
| City Government - Executive Offices in Clark, SD (2) | Concrete Prods - Ex Block & Brick (Mfrs) in Clark, SD (2) |
| County Government - Agricultural Programs in Clark, SD (2) | Florists - Retail in Clark, SD (2) |
| Funeral Home in Clark, SD (2) | Gas Companies in Clark, SD (2) |
| Hardware - Retail in Clark, SD (2) | Highway Street Construction in Clark, SD (2) |
| Hotels & Motels in Clark, SD (2) | Plumbing Contractors & Plumbers in Clark, SD (2) |
| Religious Organization in Clark, SD (2) | Residential Care Homes in Clark, SD (2) |
| Skilled Nursing Care Facility in Clark, SD (2) | Small Grains Potatoes Vegetables And Fruits Poultry Dai in Clark, SD (2) |
| Soybean Farm Corn Farm in Clark, SD (2) | State Government - Legal Counsel in Clark, SD (2) |
| Telephone Companies in Clark, SD (2) | Trucking - Contract Hauling in Clark, SD (2) |
| Trucking Operator - Nonlocal in Clark, SD (2) | Used Automobiles & Cars in Clark, SD (2) |
| Variety Stores in Clark, SD (2) | Whol Farm Garden Machinery in Clark, SD (2) |
| Wholesale Auto Parts in Clark, SD (2) | Accountants in Clark, SD (1) |
| Administrative Public Health Programs in Clark, SD (1) | Air Conditioning Contractors & Systems in Clark, SD (1) |
| Airports in Clark, SD (1) | Animal Feed & Supplies Nursery in Clark, SD (1) |
| Apartments in Clark, SD (1) | Artists Agents in Clark, SD (1) |
| Associations in Clark, SD (1) | Auto Body Repair Painting in Clark, SD (1) |
| Automobile Body - Repairing & Painting in Clark, SD (1) | Automobile Dealers - Used Cars in Clark, SD (1) |
| Automobile Lubrication Service in Clark, SD (1) | Automobile Parts & Supplies in Clark, SD (1) |
| Automobile Repairing & Service in Clark, SD (1) | Automotive Repair & Service in Clark, SD (1) |
| Bakery Shop in Clark, SD (1) | Book Dealers - Retail in Clark, SD (1) |
| Bowling Alley in Clark, SD (1) | Building Materials in Clark, SD (1) |
| Bulk Fuel Distribution in Clark, SD (1) | Business Association in Clark, SD (1) |
| Business Services in Clark, SD (1) | Cable Pay Television Service in Clark, SD (1) |
| Carpenters in Clark, SD (1) | Carpentry Contractor in Clark, SD (1) |
| Cellular Telephones (Services) in Clark, SD (1) | Chiropractor's Office in Clark, SD (1) |
| Chiropractors in Clark, SD (1) | City Government - Conservation Departments in Clark, SD (1) |
| Civil Defense Agencies in Clark, SD (1) | Clergy in Clark, SD (1) |
| Clinics in Clark, SD (1) | Coin - Operated Laundry in Clark, SD (1) |
| Consignment Shops in Clark, SD (1) | Construction - Building Contractors in Clark, SD (1) |
| County Courthouse in Clark, SD (1) | County Government - Conservation Depts in Clark, SD (1) |
| County Government - Social Human Resources in Clark, SD (1) | Crop Harvesting Services in Clark, SD (1) |
| Delis & Delicatessens in Clark, SD (1) | Dentists in Clark, SD (1) |
| Dentists in Clark, SD (1) | Drivers License Office in Clark, SD (1) |
| Drug Store in Clark, SD (1) | E - Commerce in Clark, SD (1) |
