State-By-State Average IQ in the U.S. – State IQ Rankings

Published January 4, 2025 by Amelia
Science
Featured image for State-By-State Average IQ in the U.S. – State IQ Rankings

The idea of the intelligence quotient (IQ) has long fascinated researchers, educators, and laypersons alike. It tries to represent cognitive abilities, providing insight into how human beings process information, solve problems, and learn. Although it is worth remembering that IQ scores do not capture the whole essence of the human mentality, they very much form a benchmark for understanding the mental capabilities of various populations. This article takes into consideration the average IQ in America, the state-to-state variations, and the factors that influence the score.

National Average IQ in the U.S.

Current Average IQ in the U.S.

As of 2022, the average IQ in the United States is approximately 98. This score fits into standard IQ test construction, with the average set at 100. Multiple factors account for this minor deviation: demographic changes, social, and educational disparities, etc.

Gender Differences in IQ Scores

It is noted that males score on average 99, while females score on average 97, which shows that males score slightly above females.

The Flynn Effect: Rising IQ Scores Over Time

The good news is that fluctuations of an upward nature have been noted in average IQ scores in the US over the years, and changes have been attributed to improved education, healthcare, and nutrition-all of which speak to the essence of providing equal opportunities to individuals. The gradual rise in IQ scores from one generation to the next is better known as “The Flynn Effect”, implying the effect of environment on cognitive growth. 

State Rankings: IQ Across the U.S.

For a better understanding of how these cognitive abilities relate to each other throughout the nation, we can analyze average IQ scores at the state level. The following table ranks every U.S. state based on average IQ scores based on a combination of educational assessments and standardized test results:

Top 10 States by Average IQ

ank State Average IQ
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
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

 

This ranking leans on data from reputable sources, namely, the National Assessment of Educational Progress (NAEP) and the Program for the International Assessment of Adult Competencies (PIAAC), assessing reading, math, literacy, and armed numeracy skills.

Also read: Top 20 Things to Do in Austin with Friends in 2025

Insights from High IQ States

Common characteristics, which other states with higher average IQs share, may offer an insight into the reason behind the increased average IQ in those states:

  • Massachusetts (104.3): Massachusetts is home to celebrated universities, including Harvard and MIT, situated in an atmosphere rich in intellectual stimulation that sets the groundwork for academic excellence. With a strong focus on education, the state has high literacy rates combined with sterling performance in standardized tests.
  • New Hampshire (104.2): Trailing only Massachusetts, New Hampshire boasts a strong education system and commitment to academic excellence.  Because of the small population in the state, more personalized education systems and resources are developed for the students.
  • North Dakota and Vermont (103.8): High educational standards as well as civic participation in learning characterize both states. The fact that they tend to be considerably rural helps create closeness among communities, and the value placed on education is high.
  • Minnesota (103.7): With its high-quality education and strong economy, Minnesota performs particularly well in tests. Much of that performance is due to the state investing heavily in educational infrastructure.
  • Maine (103.4); and Montana (103.4): These two emphasize investment in education. This is responsible for their high literacy rates because of their community-based learning programs.
  • Iowa (103.2): The state boasts of a strong public school system that is committed to educational equality, which helps maintain a high average IQ. 

State IQ Mean Score Determinants

Many factors come into play to explain the differences in average IQ scores across states:

  • Quality of Education- financing for education produces better academic results in states and aids in achieving comparatively higher mean IQ. The availability of advanced placement courses, extracurricular activities, and qualified teachers can create a substantial effect on student performance.
  • Care of Health- Access to good health can enhance the cognitive development of an individual from early childhood to adulthood. States such as these ranked top in healthcare provision generally contributed to good health outcomes, inducing positive effects on these cognitive abilities.
  • Socioeconomic Status- Generally, wealthier states allocate more resources to education and public services that support cognitive development. The stable economy allows families to invest much time and resources in the education of their children through tutoring, extracurricular activities, and better schools.
  • Culture about Education some states instill greater cultural respect in academic pursuits and lifelong learning, while other communities bearing such values end up producing good students.
  • The mixed demographics of a state’s population explain its mean IQ score, as differences in educational history and the resources available to various demographic groups influence their scores.

Also read: Unforgettable, Free & Affordable Family Activities in Austin, Texas

Insights from Low IQ States

Thus, in contraction, the states with lower means of IQ face challenges related to education that cause them to fall behind:

  • Mississippi (94.2): The digits show that Mississippi is the lowest in mean IQ and has quite a struggle when it comes to educational funding and matching it to the quality of health services that are important early in life for cognitive development.
  • Louisiana (95.3): Similar issues affect Louisiana, as educational outcomes are significantly impacted by socioeconomic disparities present in the state.
  • California (95.5): With a diversified population of many levels, even a global economic power with limitless opportunities does possess unique challenges in attaining educational equity among the different communities.
  • Alabama (95.7): With disparity in education funding and access to healthcare, Alabama owes its standing down to lesser means when it comes to IQ. 

Conclusion

The analysis of the average IQ scores showed divergent states because of the imbalance created by factors like education, healthcare access, economic conditions, attitudes towards education, and demographic diversities. While Massachusetts leads with an impressive average score of 104.3, the case of Mississippi is unfortunate, for they are still struggling with equitable educational opportunities.

For policymakers, this explains the issues that affect cognitive performance nationwide. Investing more in schools and addressing several social determinants of health like nutrition and access to healthcare services can get everybody’s IQ up.

Future Implications

Going forward, continued research of factors impacting IQ will be necessary for the emergence of strategies that nurture intellectual development throughout the various groups in the United States of America. This ongoing effort can help ensure that individuals have equal access to any opportunity that can boost their intelligence and the quality of their lives.

Collaboration among educators, health professionals, community leaders, and policymakers will be central to establishing an environment conducive to learning and healthy cognitive development for citizens throughout the country—regardless of district or socioeconomic status.

All in all, while average IQ is able to show us varying cognitive abilities displayed among individuals or collectives in any state, it is imperative to always consider the limitations of such figures and other factors that might be affecting them, which would eventually allow us to plan for a time when a common intellectual environment will allow even the least favored individuals to thrive and develop intellectually. 

Share Post:
A

Amelia

Amelia, a content writer at tnj.com, specializes in business advice, finance, and marketing. She delivers insightful, actionable content to empower professionals and entrepreneurs.