IQ by State

1. Massachusetts    104.3
2. New Hampshire    104.2
3. North Dakota    103.8
4. Vermont    103.8
5. Minnesota    103.7
6. Maine    103.4
7. Montana    103.4
8. Iowa    103.2
9. Connecticut    103.1
10. Wisconsin    102.9
11. Kansas    102.8
12. New Jersey    102.8
13. South Dakota    102.8
14. Wyoming    102.4
15. Nebraska    102.3
16. Virginia    101.9
17. Washington    101.9
18. Ohio    101.8
19. Indiana    101.7
20. Colorado    101.6
21. Pennsylvania    101.5
22. Idaho    101.4
23. Oregon    101.2
24. Utah    101.1
25. Missouri    101
26. New York    100.7
27. Michigan    100.5
28. Delaware    100.4
29. North Carolina    100.2
30. Texas    100
31. Illinois    99.9
32. Maryland    99.7
33. Rhode Island    99.5
34. Kentucky    99.4
35. Oklahoma    99.3
36. Alaska    99
37. West Virginia    98.7
38. Florida    98.4
39. South Carolina    98.4
40. Georgia    98
41. Tennessee    97.7
42. Arkansas    97.5
43. Arizona    97.4
44. Nevada    96.5 U
45. Alabama    95.7
46. New Mexico    95.7
47. Hawaii    95.6
48. California    95.5
49. Louisiana    95.3
50. Mississippi    94.2
https://www.inc.com/bill-murphy-jr/we-compared-average-iq-score-in-all-50-states-results-are-eye-opening.html

A friend's grandfather used to joke in exasperation, "We should have let the South secede! It would have raised the average IQ of the country." It would have.

Eleven states seceded: South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, Texas, Virginia, Arkansas, Tennessee, North Carolina.

Twenty three remained part of the U.S.: California, Connecticut, Delaware, Illinois, Indiana, Iowa, Kansas, Maine, Maryland, Massachusetts, Michigan, Minnesota, Nevada, New Hampshire, New Jersey, New York, Ohio, Oregon, Pennsylvania, Rhode Island, Vermont, West Virginia, Wisconsin.

Average IQ of C.S.A. states: 97.9
Average IQ of U.S.A. states: 101.4