1. , Iowa, United States (4) 
2. Adair, Iowa, United States (2)
3. Appanoose, Iowa, United States (1)
4. Black Hawk, Iowa, United States (5)
5. Boone, Iowa, United States (2)
6. Bremer, Iowa, United States (1)
7. Buchanan, Iowa, United States (2)
8. Carroll, Iowa, United States (1)
9. Cerro Gordo, Iowa, United States (8)
10. Clayton, Iowa, United States (1)
11. Clinton, Iowa, United States (10)
12. Crawford, Iowa, United States (2)
13. Delaware, Iowa, United States (4)
14. Des Moines, Iowa, United States (5)
15. Dubuque, Iowa, United States (1)
16. Grundy, Iowa, United States (1)
17. Hardin, Iowa, United States (1)
18. Harrison, Iowa, United States (2)
19. Henry, Iowa, United States (1)
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20. Humboldt, Iowa, United States (1)
21. Iowa, Iowa, United States (2)
22. Iowa, United States (2)
23. Jasper, Iowa, United States (2)
24. Johnson, Iowa, United States (12)
25. Jonesboro, Iowa, United States (1)
26. Lee, Iowa, United States (4)
27. Linn, Iowa, United States (4)
28. Louisa, Iowa, United States (6)
29. Madison, Iowa, United States (1)
30. Mahaska, Iowa, United States (1)
31. Marshall, Iowa, United States (1)
32. Mason City, Iowa, United States (2)
33. Mills, Iowa, United States (4)
34. Mitchell, Iowa, United States (4)
35. Muscatine County, Iowa, United States (2)
36. Muscatine, Iowa, United States (17)
37. O'Brien, Iowa, United States (3)
38. Pattawatomie, Iowa, United States (2)
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39. Plymouth, Iowa, United States (1)
40. Pocahontas, Iowa, United States (1)
41. Polk, Iowa, United States (6)
42. Pottawattamie, Iowa, United States (4)
43. Poweshiek, Iowa, United States (1)
44. Sac, Iowa, United States (2)
45. Scott, Iowa, United States (4)
46. Shelby, Iowa, United States (1)
47. Sioux, Iowa, United States (2)
48. Story, Iowa, United States (2)
49. Tama, Iowa, United States (1)
50. Taylor, Iowa, United States (1)
51. Van Buren, Iowa, United States (2)
52. Warren, Iowa, United States (1)
53. Webster, Iowa, United States (1)
54. Woodbury, Iowa, United States (3)
55. Wright, Iowa, United States (2)
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