Average IQ by Country (2026) — Estimates & What They Really Mean

⚠️ Important: these figures do NOT reflect innate intelligence or the superiority of any group. Differences between countries are driven mostly by environmental factors — access to education, nutrition and health, familiarity with standardized testing, how representative the sample is, and the Flynn effect (scores rising each generation). Measurement methods differ between studies, so reliability is limited. Never use these numbers to judge the worth of any person or people.

#	Country	Avg. IQ (est.)
1	Japan	106
2	Taiwan	106
3	Singapore	106
4	South Korea	105
5	Hong Kong	105
6	China	104
7	Switzerland	102
8	Netherlands	102
9	Finland	101
10	Germany	101
11	Austria	101
12	Sweden	101
13	Italy	100
14	Belgium	100
15	Norway	100
16	United Kingdom	100
17	Denmark	100
18	Canada	100
19	New Zealand	100
20	Australia	99
21	France	99
22	Poland	99
23	Czechia	99
24	United States	98
25	Spain	98
26	Ireland	98
27	Hungary	98
28	Russia	97
29	Portugal	96
30	Greece	95
31	Vietnam	94
32	Argentina	93
33	Turkey	90
34	Thailand	89
35	Mexico	88
36	Brazil	87
37	Indonesia	87
38	Philippines	86
39	Iran	84
40	Egypt	83
41	India	82
42	Nigeria	78
43	South Africa	77
44	Kenya	74

What shapes these numbers

Years and quality of schooling, nutrition, healthcare access, and familiarity with standardized tests strongly affect average scores. Within the same country, scores rise across generations (the Flynn effect, roughly 3 points per decade) — reflecting a better environment, not genetics. So this table is less about "which country is smarter" and more about "which conditions raise cognitive-test scores."

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Average IQ by Country — Estimates & What They Really Mean

What shapes these numbers