If you Google “biggest companies in Arizona,” you’re going to end up with dozens of different lists based on even more sets of criteria.

But Zippia compiled a list of the biggest Arizona-based companies and ranked them according to total employee count. Here are the 50 largest Arizona-based companies, the location of their headquarters, and the company’s total employee count.

1. PetSmart, Phoenix, 53,000

2. Banner Health, Phoenix, 50,000

3. Circle K, Tempe, 40,000

4. ON Semiconductor, Phoenix, 36,000

5. U-Haul, Phoenix, 30,616

6. Freeport-McMoRan, Phoenix, 30,000

7. Sprouts Farmers Market, Phoenix, 30,000

8. Amkor Technology, Chandler, 29,300

9. The University of Arizona, Tucson, 28,390

10. Apollo Education Group, Phoenix, 28,000

11. Knight Transportation. Phoenix. 25,400

12. Arizona State University, Tempe, 21,000

13. Benchmark Electronics, Tempe, 20,000

14. HonorHealth, Scottsdale, 17,000

15. Avnet, Phoenix, 15,700

16. Massage Envy, Scottsdale, 14,460

17. Microchip Technology, Chandler, 14,234

18. Southern Copper, Phoenix, 12,000

19. CSK Auto, Phoenix, 11,949

20. Asarco, Sahuarita, 11,100

21. Magellan Health, Scottsdale, 10,700

22. Bashas’, Chandler, 9,085

23. RIMROCK, Scottsdale, 9,000

24. Realty Executives International, Phoenix, 8,000

25. Pharm, Scottsdale, 7,500

26. Rural/Metro, Scottsdale, 7,059

27. Mister Car Wash, Tucson, 7,000

28. TPI Composites, Scottsdale, 6,700

29. Insight Enterprises, Tempe, 6,697

30. Arizona Public Service, Phoenix, 6,339

31. Pinnacle West Capital, Phoenix, 6,292

32. AmCheck, Phoenix, 6,008

33. GoDaddy, Scottsdale, 5,990

34. Troon, Scottsdale, 5,936

35. Hyundai Engineering (HEC), Mesa, 5,759

36. City of Phoenix, Phoenix, 5,130

37. Salt River Project, Tempe, 5,123

38. Drivetime Automotive Group, Tempe, 5,000

39. Flood Control District of Maricopa County, Phoenix, 4,710

40. Cavco Industries, Phoenix, 4,300

41. Phoenix Children’s Hospital, Phoenix, 4,154

42. Mesa Airlines, Phoenix, 4,113

43. First Solar, Tempe, 4,100

44. Forever Living Products, Scottsdale, 4,100

45. Kona Grill, Scottsdale, 4,066

46. Shamrock Foods, Phoenix, 3,995

47. TMC Healthcare, Tucson, 3,888

48. Grand Canyon University, Phoenix, 3,850

49. Services Group of America, Scottsdale, 3,600

50. Northern Arizona Healthcare, Flagstaff, 3,438