| Churches in Mercer, PA (20) | Restaurants in Mercer, PA (19) |
| Beauty Salons in Mercer, PA (10) | Government Offices in Mercer, PA (10) |
| Shoes - Retail in Mercer, PA (10) | Attorneys & Lawyers in Mercer, PA (9) |
| Automobile Dealers - Used Cars in Mercer, PA (9) | Women's Apparel - Retail in Mercer, PA (9) |
| Clothing - Retail in Mercer, PA (8) | General Contractors in Mercer, PA (8) |
| Schools in Mercer, PA (8) | Hotels & Motels in Mercer, PA (7) |
| Campgrounds in Mercer, PA (6) | City Government - Finance & Taxation in Mercer, PA (6) |
| Excavating Contractors in Mercer, PA (6) | Factory Outlets in Mercer, PA (6) |
| Gift Shops in Mercer, PA (6) | Physical Therapists in Mercer, PA (6) |
| Government Offices - County in Mercer, PA (5) | Insurance in Mercer, PA (5) |
| Physicians & Surgeons in Mercer, PA (5) | Automobile Body - Repairing & Painting in Mercer, PA (4) |
| Bed & Breakfast Accommodations in Mercer, PA (4) | Childrens & Infants Wear - Retail in Mercer, PA (4) |
| Chinaware & Glassware - Retail in Mercer, PA (4) | Chiropractors in Mercer, PA (4) |
| Federal Government - Conservation Depts in Mercer, PA (4) | Real Estate in Mercer, PA (4) |
| Sporting Goods - Retail in Mercer, PA (4) | Tire - Dealers - Retail in Mercer, PA (4) |
| Trucking in Mercer, PA (4) | Accountants in Mercer, PA (3) |
| Apartments in Mercer, PA (3) | Automobile Dealers - New Cars in Mercer, PA (3) |
| Automobile Repairing & Service in Mercer, PA (3) | Cabinets - Manufacturers in Mercer, PA (3) |
| Candy & Confectionery - Retail in Mercer, PA (3) | Clergy in Mercer, PA (3) |
| Clubs in Mercer, PA (3) | Convenience Stores in Mercer, PA (3) |
| Dentists in Mercer, PA (3) | Fire Departments in Mercer, PA (3) |
| Golf Course in Mercer, PA (3) | Jewelers - Retail in Mercer, PA (3) |
| Legal Services in Mercer, PA (3) | Men's Clothing & Furnishings - Retail in Mercer, PA (3) |
| Restaurant in Mercer, PA (3) | Retreat Houses in Mercer, PA (3) |
| Sportswear - Retail in Mercer, PA (3) | Taxidermists in Mercer, PA (3) |
| Veterinarians in Mercer, PA (3) | Banks in Mercer, PA (2) |
| Bars in Mercer, PA (2) | Book Dealers - Retail in Mercer, PA (2) |
| Carpet & Rug Cleaners in Mercer, PA (2) | Computers - Service & Repair in Mercer, PA (2) |
| County Government - Public Order & Safety in Mercer, PA (2) | County Government - Social Human Resources in Mercer, PA (2) |
| Dairy Products in Mercer, PA (2) | Environmental Excavating Contractor in Mercer, PA (2) |
| Florists - Retail in Mercer, PA (2) | Forgings (Manufacturers) in Mercer, PA (2) |
| Fraternal Organizations in Mercer, PA (2) | General Merchandise - Retail in Mercer, PA (2) |
| Home Improvements in Mercer, PA (2) | Housewares - Retail in Mercer, PA (2) |
| Ice Cream Parlors in Mercer, PA (2) | Livestock Buyers in Mercer, PA (2) |
| Loans in Mercer, PA (2) | Manufactures Pipe Cutting Tools in Mercer, PA (2) |
| Mobile Homes - Park Developers in Mercer, PA (2) | Motorcycles & Motor Scooters - Supplies in Mercer, PA (2) |
| Mufflers & Exhaust Systems - Engine in Mercer, PA (2) | New Used Automobiles in Mercer, PA (2) |
| Notaries - Public in Mercer, PA (2) | Occupational Therapists in Mercer, PA (2) |
| Parking Area Lots Maintenance & Marking in Mercer, PA (2) | Parks in Mercer, PA (2) |
| Plumbing Contractors & Plumbers in Mercer, PA (2) | Police Departments in Mercer, PA (2) |
| Post Offices in Mercer, PA (2) | Probation Services in Mercer, PA (2) |
| Retail Shops in Mercer, PA (2) | Services in Mercer, PA (2) |
| State Bank in Mercer, PA (2) | State Government - Transportation Programs in Mercer, PA (2) |
| Underground Sprinkler Systems in Mercer, PA (2) | Veterans & Military Organizations in Mercer, PA (2) |
| Video Tapes & Discs - Renting & Leasing in Mercer, PA (2) | Wrecker Service & Towing in Mercer, PA (2) |
| Air Balancing in Mercer, PA (1) | Air Conditioning Contractors & Systems in Mercer, PA (1) |
| Alcoholic Beverages in Mercer, PA (1) | Animal Services in Mercer, PA (1) |
| Antiques - Dealers in Mercer, PA (1) | Apartments in Mercer, PA (1) |
| Architects in Mercer, PA (1) | Asphalt & Asphalt Products - Manufacturers in Mercer, PA (1) |
| Associations in Mercer, PA (1) | Auctioneers in Mercer, PA (1) |
