State-by-State List: 

CDC's (Center for Disease Control)

2005 List of Adult Obesty Prevalence from Highest to Lowest

(Ties are listed in alpabetical order.  Highest to lowest for each state & Washington, DC)

1.  Mississippi = 30.3%

2.  West Virginia = 30.1%

3.  Louisiana = 30%

4.  South Carolina = 28.5%

5.  Alabama = 28.1%

6.  Kentucky = 27.9%

7.  Arkansas = 27.2%

8.  Alaska = 26.9%

9.  Tennessee = 26.7%

10. Indiana = 26.4%

11. Texas = 26.3%

12. Missouri = 26.2%

13. Oklahoma = 26.1%

14. Georgia = 25.9%

15. Michigan = 25.5%

16. North Carolina = 25.4%

17. Nebraska = 25.1%

18. South Dakota = 24.9

19. Iowa = 24.7%

19. North Dakota = 24.7%

20. Pennsylvania = 24.6%

21. Virginia = 24.5%

22. Illinois = 24.3%

23. Ohio = 23.9%

23. Wisconsin = 23.9%

24. Idaho = 23.8%

24. Maryland = 23.8%

25. Wyoming = 23.5%

26. Kansas = 23.4%

27. Oregon = 23.1%

28. Minnesota = 22.9%

29. Delaware = 22.8%

30. Washington = 22.7%

31. Florida = 22.3%

31. Maine = 22.3%

31. New Hampshire = 22.3%

32. California = 22%

33. New York = 21.6%

34. New Jersey = 21.5%

35. New Mexico = 21.2%

36. Washigton, DC = 21.1%

37. Arizona = 20.9%

38. Utah = 20.8%

39. Nevada = 20.7%

40. Montana = 20.6%

41. Rhode Island = 20.5%

42. Massachusetts = 20.1%

43. Vermont = 19.8%

44. Connecticut = 19.3%

45. Hawaii = 19.1%

46. Colorado = 17.4%

Source:  CDC's Morbidity and Mortality Weekly Report published September 15, 2006; vol 55: pp 985-988.