The States With The Highest (And Lowest) Average IQ

As of 2026, the average IQ across the United States stands at 98, based on various IQ assessments.

While IQ tests ignite debate regarding their effectiveness in measuring intelligence, they continue to be widely referenced. Critics argue that these tests often focus narrowly on specific cognitive skills, failing to account for creativity and practical intelligence. For instance, a highly intelligent dolphin wouldn’t necessarily excel in answering multiple-choice questions but demonstrates intelligence in its own right.

Despite the controversies surrounding IQ testing, Americans place significant value on intellectual capabilities. From academic performance (GPA) to standardized testing and educational achievements, cognitive skills significantly influence career and financial success.

In this article, we explore the average IQ by state, revealing which regions showcase the highest levels of cognitive proficiency—or at least excel in test-taking. Read on to discover where your state ranks!

States With The Highest IQ

Massachusetts – 104.3
New Hampshire – 104.2
Vermont – 103.8
North Dakota – 103.8
Minnesota – 103.7
Montana – 103.4
Maine – 103.4
Iowa – 103.2
Connecticut – 103.1

The top 10 states, primarily from the Northeast and Midwest, reflect average IQs ranging from 104.3 to 103.1. Notably, Massachusetts boasts an average IQ more than 10 points higher than that of the lowest-ranking state.

Lowest IQ States

Mississippi – 94.2
Louisiana – 95.3
California – 95.5
Hawaii – 95.6
New Mexico – 95.7
Alabama – 95.7
Nevada – 96.5
Arizona – 97.4
Arkansas – 97.5
Tennessee – 97.7

Mississippi ranks as the state with the lowest average IQ at 94.2, closely followed by several Southern and Southwestern states, including tropical Hawaii. If your state did not appear in the top or bottom ten, keep scrolling to discover its ranking.

How We Calculated This Data

Our analysis of average IQ by state is derived from reputable data sources, including educational assessments and standardized test scores. Researchers primarily focused on metrics such as SAT and ACT scores, as well as high school and college graduation rates. These factors correlate with cognitive abilities and provide a broad estimate for large populations.

Average IQ By State – All 50 States Ranked by IQ

Rank	State	Average IQ
1	Massachusetts	104.3
2	New Hampshire	104.2
3	Vermont	103.8
3	North Dakota	103.8
5	Minnesota	103.7
6	Montana	103.4
6	Maine	103.4
8	Iowa	103.2
9	Connecticut	103.1
10	Wisconsin	102.9
11	South Dakota	102.8
11	New Jersey	102.8
11	Kansas	102.8
14	Wyoming	102.4
15	Nebraska	102.3
16	Washington	101.9
16	Virginia	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	South Carolina	98.4
38	Florida	98.4
40	Georgia	98
41	Tennessee	97.7
42	Arkansas	97.5
43	Arizona	97.4
44	Nevada	96.5
45	New Mexico	95.7
45	Alabama	95.7
47	Hawaii	95.6
48	California	95.5
49	Louisiana	95.3
50	Mississippi	94.2

Understanding IQ Tests Limitations

If your state’s IQ score caused concern, remember that these figures are not definitive measures of individual capabilities. As previously mentioned, IQ scores are aggregated data reflecting large populations. While a 10-point difference may be significant on a personal level, its impact might be less pronounced when viewed at the state level. All the states in this ranking fall within the average range of 90-110, as per the Woodcock–Johnson Test of Cognitive Abilities.

Thus, Mississippi shouldn’t be disheartened, nor should Massachusetts overly boast about its standing.

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Author

Kathy Morris

Kathy is the head of content at Zippia with a knack for engaging audiences. Prior to joining Zippia, Kathy worked at Gateway Blend growing audiences across diverse brands. She graduated from Troy University with a degree in Social Science Education.

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