| Restaurants in Mason City, IA (62) | Churches in Mason City, IA (45) |
| Insurance in Mason City, IA (33) | Beauty Salons in Mason City, IA (31) |
| Attorneys & Lawyers in Mason City, IA (29) | Corn Farm Whol Livestock Soybean Farm in Mason City, IA (25) |
| Automobile Repairing & Service in Mason City, IA (24) | Physicians & Surgeons in Mason City, IA (22) |
| Automobile Dealers - Used Cars in Mason City, IA (21) | General Crop Farm in Mason City, IA (21) |
| Real Estate in Mason City, IA (17) | Dentists in Mason City, IA (15) |
| Government Offices - County in Mason City, IA (15) | Schools in Mason City, IA (15) |
| Social Service & Welfare Organizations in Mason City, IA (15) | Accountants in Mason City, IA (14) |
| Bars in Mason City, IA (14) | Electric Contractors in Mason City, IA (14) |
| General Contractors in Mason City, IA (14) | Retreat Houses in Mason City, IA (14) |
| Beauty Shop in Mason City, IA (13) | Apartments in Mason City, IA (12) |
| Clinics in Mason City, IA (12) | Banks in Mason City, IA (11) |
| Business Construction Services in Mason City, IA (11) | Gift Shops in Mason City, IA (11) |
| Real Property Lessor Vegetable Melon Farm in Mason City, IA (11) | Roofing Contractors & Roofers in Mason City, IA (11) |
| Automobile Body - Repairing & Painting in Mason City, IA (10) | Cellular Telephones (Services) in Mason City, IA (10) |
| Convenience Stores in Mason City, IA (10) | Dancing Instruction in Mason City, IA (10) |
| Hotels & Motels in Mason City, IA (10) | Child Care Service in Mason City, IA (9) |
| Painting Contractors in Mason City, IA (9) | Plumbing Contractors & Plumbers in Mason City, IA (9) |
| Associations in Mason City, IA (8) | Credit Unions in Mason City, IA (8) |
| Government Offices in Mason City, IA (8) | Auctioneers in Mason City, IA (7) |
| Car Washing & Polishing in Mason City, IA (7) | Chiropractors in Mason City, IA (7) |
| Department Stores in Mason City, IA (7) | Gifts Shop in Mason City, IA (7) |
| Painters in Mason City, IA (7) | Pharmacies in Mason City, IA (7) |
| Architects in Mason City, IA (6) | Automobile Dealers - New Cars in Mason City, IA (6) |
| Automotive Repair & Service in Mason City, IA (6) | Carpet & Rug Cleaners in Mason City, IA (6) |
| Financial Planning Consultants in Mason City, IA (6) | Fraternal Organizations in Mason City, IA (6) |
| Furniture - Dealers in Mason City, IA (6) | Grocery - Retail in Mason City, IA (6) |
| House Construction Contractors in Mason City, IA (6) | Janitor Service in Mason City, IA (6) |
| Jewelers - Retail in Mason City, IA (6) | Manicure & Nail Salons in Mason City, IA (6) |
| Marriage & Family Counselors in Mason City, IA (6) | Pizza in Mason City, IA (6) |
| Retail Shops in Mason City, IA (6) | Retirement Communities & Homes in Mason City, IA (6) |
| Storage - Household & Commercial in Mason City, IA (6) | Trucking Hauling Contractor in Mason City, IA (6) |
| Women's Apparel - Retail in Mason City, IA (6) | Government Offices - State in Mason City, IA (5) |
| Hearing Impaired Equipment & Supplies in Mason City, IA (5) | Ice Cream Parlors in Mason City, IA (5) |
| Investment Securities in Mason City, IA (5) | Labor Organizations in Mason City, IA (5) |
| Mental Health Services in Mason City, IA (5) | Non - Profit Organizations in Mason City, IA (5) |
| Optometrists Od in Mason City, IA (5) | Pest Control in Mason City, IA (5) |
| Real Estate Loans in Mason City, IA (5) | Rehabilitation Services in Mason City, IA (5) |
| Repair Electrical Appliances Ret Appliances Televisions in Mason City, IA (5) | Screen Printing in Mason City, IA (5) |
| Senior Citizens Service in Mason City, IA (5) | Shoes - Retail in Mason City, IA (5) |
| Siding Contractors in Mason City, IA (5) | Signs in Mason City, IA (5) |
| State Government - Transportation Programs in Mason City, IA (5) | Tire - Dealers - Retail in Mason City, IA (5) |
| Tree Service in Mason City, IA (5) | Youth Organizations & Centers in Mason City, IA (5) |
| Air Conditioning Contractors & Systems in Mason City, IA (4) | Appliances - Household - Major - Repairing in Mason City, IA (4) |
| Asphalt & Asphalt Products in Mason City, IA (4) | Automobile Parts & Supplies - Retail - New in Mason City, IA (4) |
| Book Dealers - Retail in Mason City, IA (4) | Commercial Printing in Mason City, IA (4) |
| County Government - Finance & Taxation in Mason City, IA (4) | Employment Agencies & Opportunities in Mason City, IA (4) |
| Excavating Contractors in Mason City, IA (4) | Funeral Home in Mason City, IA (4) |
| Garbage Collection in Mason City, IA (4) | Heating Contractors in Mason City, IA (4) |
| Insurance - Inspection & Audits in Mason City, IA (4) | Legal Services in Mason City, IA (4) |
