Here are Butler County’s top employers with the community where they are and the number of full- and part-time employees.

1. AK Steel, Butler Township — 1,800

2. Iron Mountain Underground Storage, Boyers — 1,700, employed by about 15 businesses within the facility

3. Butler Health System, including Butler Memorial Hospital, Butler — 1,657

4. Butler School District, Butler and Butler Township — 1,174

5. Traco, Cranberry Township — 1,100

6. Manheim’s Pennsylvania Auction Services and the Butler Auto Auction, Cranberry Township, and Butler County Community College, campuses in Cranberry and Butler townships — both at 1,000

7. Slippery Rock University, Slippery Rock — 904

8. Seneca Valley School District, Jackson Township — 863

9. Concordia Lutheran Home, Jefferson Township — 860

10. Verizon Wireless, Cranberry Township — 843

11. Wal-Mart, Cranberry and Butler townships — 830

12. Butler County Government, Butler — 798

13. Giant Eagle, stores throughout county and its subsidiary Butler Refrigerated Meats in Harmony — 795

14. Lutheran Affiliated Services, Cranberry Township — 750

15. Commonwealth of Pennsylvania — 639

16. Penn United Technologies, Jefferson Township — 577

17. Butler Veterans Affairs Medical Center, Butler Township — 563

18. Oberg Industries, Buffalo Township — 466

19. Mine Safety Appliances, Cranberry Township — 460

20. II-VI Inc., Clinton Township, and Armstrong, Butler — both at 440