| Restaurants in Mars, PA (14) | Automobile Repairing & Service in Mars, PA (9) |
| Churches in Mars, PA (8) | Dentists in Mars, PA (8) |
| Landscape Contractors in Mars, PA (8) | Insurance in Mars, PA (7) |
| Schools in Mars, PA (7) | Attorneys & Lawyers in Mars, PA (6) |
| Excavating Contractors in Mars, PA (6) | Beauty Salons in Mars, PA (5) |
| General Contractors in Mars, PA (5) | Real Estate in Mars, PA (5) |
| Child Care Service in Mars, PA (4) | Hotels & Motels in Mars, PA (4) |
| Real Estate Loans in Mars, PA (4) | Automobile Dealers - Used Cars in Mars, PA (3) |
| Building Contractors in Mars, PA (3) | Business Management Consultants in Mars, PA (3) |
| Chiropractors in Mars, PA (3) | Clubs in Mars, PA (3) |
| Computers - System Designers & Consultants in Mars, PA (3) | Florists - Retail in Mars, PA (3) |
| Government Offices in Mars, PA (3) | Heating Contractors in Mars, PA (3) |
| Homes & Institutions in Mars, PA (3) | Ice Cream Parlors in Mars, PA (3) |
| Machine Shops in Mars, PA (3) | Massage Therapists in Mars, PA (3) |
| Physicians & Surgeons in Mars, PA (3) | Police Departments in Mars, PA (3) |
| Accountants in Mars, PA (2) | Ambulance Service in Mars, PA (2) |
| Architects in Mars, PA (2) | Associations in Mars, PA (2) |
| Awnings & Canopies in Mars, PA (2) | Bakers - Retail in Mars, PA (2) |
| Banks in Mars, PA (2) | Carpet & Rug Cleaners in Mars, PA (2) |
| Concrete Contractors in Mars, PA (2) | Cosmetics & Perfumes - Retail in Mars, PA (2) |
| Electrical Contractor in Mars, PA (2) | Environmental Excavating Contractor in Mars, PA (2) |
| Grocery - Retail in Mars, PA (2) | Home Improvements in Mars, PA (2) |
| Interior Decorators Design & Consultants in Mars, PA (2) | Manufacturers - Agents & Representatives in Mars, PA (2) |
| Non - Profit Organizations in Mars, PA (2) | Parking Area Lots Maintenance & Marking in Mars, PA (2) |
| Pet Boarding & Sitting in Mars, PA (2) | Physical Therapists in Mars, PA (2) |
| Plumbing Contractors & Plumbers in Mars, PA (2) | Retreat Houses in Mars, PA (2) |
| Schools - Nursery & Kindergarten in Mars, PA (2) | Steel - Structural (Manufacturers) in Mars, PA (2) |
| Storage - Household & Commercial in Mars, PA (2) | Travel Agencies & Bureaus in Mars, PA (2) |
| Veterinarians in Mars, PA (2) | Abstracters in Mars, PA (1) |
| Air Conditioning Contractors & Systems in Mars, PA (1) | Air Pollution Control in Mars, PA (1) |
| Aircraft Equipment Parts & Supplies in Mars, PA (1) | Airports in Mars, PA (1) |
| Alcoholic Beverages in Mars, PA (1) | All Terrain Vehicles in Mars, PA (1) |
| Alternative Medicine in Mars, PA (1) | Alternators & Generators - Automotive in Mars, PA (1) |
| Animal Services in Mars, PA (1) | Apartments in Mars, PA (1) |
| Artists - Fine Arts in Mars, PA (1) | Asphalt Felts & Coatings (Mfrs) in Mars, PA (1) |
| Asphalt Paving Contractors in Mars, PA (1) | Assembly & Fabricating Service in Mars, PA (1) |
| Auctioneers in Mars, PA (1) | Auto Body Repair Painting in Mars, PA (1) |
| Automobile Body - Repairing & Painting in Mars, PA (1) | Automobile Lubrication Service in Mars, PA (1) |
| Automobile Radiator Repairing in Mars, PA (1) | Automotive Repair & Service in Mars, PA (1) |
| Beauty Supplies & Equipment - Repairing in Mars, PA (1) | Bed & Breakfast Accommodations in Mars, PA (1) |
| Beer & Ale - Retail in Mars, PA (1) | Boilers - Repairing & Cleaning in Mars, PA (1) |
| Book Dealers - Retail in Mars, PA (1) | Bowling Center in Mars, PA (1) |
| Brakes - Manufacturers in Mars, PA (1) | Bronze (Manufacturers) in Mars, PA (1) |
| Building Designers in Mars, PA (1) | Building Inspection Service in Mars, PA (1) |
| Buses - Charter & Rental in Mars, PA (1) | Business & Trade Organizations in Mars, PA (1) |
| Candles - Manufacturers in Mars, PA (1) | Carpentry Contractor in Mars, PA (1) |
| Carpet & Rug Cleaning Supplies in Mars, PA (1) | Chemicals (Wholesale) in Mars, PA (1) |
| City Government - Libraries in Mars, PA (1) | City Govt - Regulation Adm - Comms Utilities in Mars, PA (1) |
| Cleaners in Mars, PA (1) | Cleaning Compounds - Manufacturers in Mars, PA (1) |
| Clergy in Mars, PA (1) | Clinics in Mars, PA (1) |
