Major Employers
Montgomery County has historically been a center for business and industry. Whether it was the Limekiln's of the 1800's or today's large business communities such as Ft. Washington and King of Prussia, major corporations call Montgomery County home. For your information, we have listed, to the best of our ability, the top private sector employers ranked by the number of employees.
| 1. Merck & Company, Inc. |
12,000 |
| 2. Mercy Health System |
8,000 |
| 3. Main Line Health System |
7,944 |
| 4. Abington Memorial Hospital |
4,917 |
| 5. AlliedBarton Security |
4,500 |
| 6. Wyeth Pharmaceuticals |
3,700 |
| 8. Aetna, Inc. |
3,664 |
8. Lockheed Martin Integrated Systems
& Solutions |
3,500 |
| 9. Quest Diagnostics |
3,050 |
| 10. ABM Services |
3,000 |
| 11. Unisys Corp. |
3,000 |
| 12. American Building Maintenance, Co. |
2,500 |
| 13. Home Depot, USA, Inc. |
2,500 |
14. McNeil Consumer & Specialty
Pharmaceuticals |
2,100 |
| 15. Lankenau Hospital |
2,087 |
| 16. Holy Redeemer Health System |
2,068 |
| 17. Genuardi's Market |
2,050 |
| 18. Bryn Mawr Hospital |
2,000 |
The following items apply to the above referenced list, its contents, and how the information was compiled. It is very important to include these notes when using this listing as a source of reference.
This listing is of private sector employers with the exception of PECO Energy Company, which is a public utility.
All employment numbers are rounded to be as accurate as possible.
This list was compiled using existing sources, County Commerce Department sources, Pennsylvania Department of Community and Economic Development, and Chamber of Commerce sources.
Some of the firms listed may have more than one Montgomery County site or sites outside our county. However, the employment figure shown is intended to represent only the actual number of jobs in Montgomery County.