| Corn Farm Whol Livestock Soybean Farm in Willow Lake, SD (14) | General Crop Farm in Willow Lake, SD (7) |
| Churches in Willow Lake, SD (5) | Real Property Lessor Vegetable Melon Farm in Willow Lake, SD (5) |
| Schools in Willow Lake, SD (5) | Cattle Ranching in Willow Lake, SD (4) |
| Farms in Willow Lake, SD (4) | Accountants in Willow Lake, SD (2) |
| Banks in Willow Lake, SD (2) | Bars in Willow Lake, SD (2) |
| Beauty Salons in Willow Lake, SD (2) | Elementary Secondary School in Willow Lake, SD (2) |
| Feed Store & Farm in Willow Lake, SD (2) | Fertilizers (Wholesale) in Willow Lake, SD (2) |
| General Contractors in Willow Lake, SD (2) | Hay Farm in Willow Lake, SD (2) |
| Livestock Auction Markets in Willow Lake, SD (2) | Lumber - Retail in Willow Lake, SD (2) |
| Soybean Farm Corn Farm in Willow Lake, SD (2) | Ambulance Service in Willow Lake, SD (1) |
| Animal Services in Willow Lake, SD (1) | Automotive Repair & Service in Willow Lake, SD (1) |
| Beauty Shop in Willow Lake, SD (1) | Business Management Consultants in Willow Lake, SD (1) |
| Cash Grains Farm in Willow Lake, SD (1) | Cash Grains Farm in Willow Lake, SD (1) |
| Cattle Feedlot in Willow Lake, SD (1) | Child Care Service in Willow Lake, SD (1) |
| Clubs in Willow Lake, SD (1) | Fire Departments in Willow Lake, SD (1) |
| Fishing Bait in Willow Lake, SD (1) | Fuel - Retail in Willow Lake, SD (1) |
| General Contractor in Willow Lake, SD (1) | Government Offices in Willow Lake, SD (1) |
| Grain - Dealers (Wholesale) in Willow Lake, SD (1) | Grain Elevator in Willow Lake, SD (1) |
| Grocery - Retail in Willow Lake, SD (1) | Grocery Store in Willow Lake, SD (1) |
| Hog Farm Or Feedlot in Willow Lake, SD (1) | Hotels & Motels in Willow Lake, SD (1) |
| Lockers in Willow Lake, SD (1) | Masonry And Stonework in Willow Lake, SD (1) |
| Massage Therapists in Willow Lake, SD (1) | Meat Products in Willow Lake, SD (1) |
| Mfg Prefabricated Wood Buildings in Willow Lake, SD (1) | Misc Personal Services in Willow Lake, SD (1) |
| Nuts - Edible - Wholesale & Processing in Willow Lake, SD (1) | Physical Therapists in Willow Lake, SD (1) |
| Plumbing Contractors & Plumbers in Willow Lake, SD (1) | Post Offices in Willow Lake, SD (1) |
| Ranch in Willow Lake, SD (1) | Ranches in Willow Lake, SD (1) |
| Restaurants in Willow Lake, SD (1) | Retreat Houses in Willow Lake, SD (1) |
| Slaughter And Processing in Willow Lake, SD (1) | Small Grains Potatoes Vegetables And Fruits Poultry Dai in Willow Lake, SD (1) |
| State Bank in Willow Lake, SD (1) | Tax Return Preparation & Filing in Willow Lake, SD (1) |
| Trucking in Willow Lake, SD (1) | Us Postal Service in Willow Lake, SD (1) |
| Wheat Farm in Willow Lake, SD (1) | Whol Livestock Beef Cattle - Except Feedlot in Willow Lake, SD (1) |
