Which country has the highest Average IQ (IIT)?

Hong Kong has the highest Average IQ (IIT) in 2025, at 107.73, followed by South Korea (106.97) and China (106.48).

Which country has the lowest Average IQ (IIT)?

Somalia has the lowest Average IQ (IIT) in 2025, at 83.84.

What is the median Average IQ (IIT) across countries?

The median is 97.12 across the 142 countries with data in 2025.

Where does this average iq by country data come from?

Rankodex compiles it from World Population Review and the primary sources it cites: Average IQ by country (2025 update) - The International IQ Test; Intelligence Capital Index - Kailchan; Pisa 2022 - OECD; Intelligence related to income and climate - World Data. Last updated 2026-10-28.

Country rankings

Average IQ by Country

Name: Average IQ by Country
Creator: Rankodex

Hong Kong has the highest Average IQ (IIT) in 2025 (107.73), followed by South Korea (106.97) and China (106.48). Somalia has the lowest (83.84).

Health201 countries · 8 metricsUpdated Oct 28, 2026Original page

6 sources

Showing

Year

142 of 235 countries

Compare this metric Add to combined ranking Open full map

Average IQ (IIT), 2025

Darker green is better (higher is better). Click a place to highlight it.

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Ranking

Best first: the first 15 and last 5 of 142 countries.

Distribution Median and middle halfThe median is the middle value: half of places are above it, half below. The middle half is the range holding the central 50% of places.More in the glossary →

Each dot is one country; the lines mark the median and the middle half.

Median

97.12

Middle half 93.12 – 99.79

Average

96.58

142 countries

Highest

107.73

Hong Kong

Lowest

83.84

Somalia

Biggest changes · 2024 → 2025

127 countries have a value in both years.

Improved most

Declined most

Data

Click a column to sort, a row to highlight that place on the charts.

150 countries · # = rank by Average IQ (IIT)

#
1	Hong Kong	107.73	B+	51.2
2	South Korea	106.97	A-	56.4
3	China	106.48	B	47.3
4	Macau	106.32	—	—
5	Japan	106.3	A-	58.9
6	Taiwan	105.8	B	45.7
7	Iran	104.8	C-	25.5
8	Australia	104.45	A	64.0
9	Russia	103.78	B	46.6
10	Singapore	103.56	A	63.6
11	Mongolia	102.61	C-	27.4
12	New Zealand	102.35	A-	57.3
13	Vietnam	102.26	C-	25.1
14	Spain	102.24	B	49.8
15	Cyprus	102.12	C+	38.5
16	Canada	102.09	A	61.2
17	United Kingdom	101.57	A	64.2
18	Sri Lanka	101.22	D+	23.2
19	Slovenia	101.15	B+	51.5
20	Belarus	101.05	—	—
21	United States	101.04	A+	74.9
22	Albania	101	D+	23.4
23	Switzerland	100.84	A	61.6
24	Georgia	100.35	C	31.5
25	Italy	100.33	B	48.0
26	Netherlands	100.27	A-	58.7
27	Peru	100.2	C-	28.0
28	Hungary	100.15	B	50.0
29	Armenia	100.13	C-	29.6
30	France	100.12	A-	56.7
31	Finland	99.97	A	60.5
32	Portugal	99.95	B-	44.8
32	Lithuania	99.95	B	46.3
34	Thailand	99.94	C-	29.2
35	Serbia	99.83	C+	35.2
36	Austria	99.8	A-	58.7
37	Belgium	99.74	A-	58.7
38	Malta	99.68	B-	40.8
39	Greece	99.55	B-	40.1
40	Czechia	99.36	B+	51.8
41	Germany	99.32	A	64.2
41	Croatia	99.32	C+	38.5
43	Poland	99.14	B	45.6
44	Lebanon	99.13	D	19.8
45	Estonia	99.08	B	49.5
46	Latvia	99.01	B	45.8
47	Romania	98.88	C+	39.4
47	North Macedonia	98.88	C-	28.3
49	Slovakia	98.87	B-	43.6
50	Luxembourg	98.75	B+	53.8
51	Israel	98.57	B+	50.1
52	Malaysia	98.51	C+	35.5
53	India	98.44	C-	29.4
54	Montenegro	98.43	C	34.6
55	Syria	98.41	—	—
56	Norway	98.31	B+	55.0
57	Myanmar	98.28	—	—
58	Sweden	98.22	A	61.6
58	Ireland	98.22	B+	53.6
60	Azerbaijan	98.03	C-	28.6
61	Qatar	97.94	C	31.3
62	Denmark	97.68	A	60.3
63	Algeria	97.53	D	19.1
64	Tunisia	97.46	D+	24.8
65	United Arab Emirates	97.39	C+	35.9
66	Bangladesh	97.32	D	16.9
67	Nepal	97.31	D	18.3
68	Iceland	97.25	B+	52.0
69	Morocco	97.24	D+	22.6
70	Faroe Islands	97.23	—	—
71	Bosnia and Herzegovina	97.13	C-	25.8
72	Argentina	97.11	B-	40.5
73	Turkey	97	C	33.4
74	Pakistan	96.93	D	19.6
75	Moldova	96.85	C	31.5
76	Egypt	96.74	D+	21.6
77	Uzbekistan	96.54	—	—
77	Bulgaria	96.54	B-	43.3
77	Brunei	96.54	—	—
80	Cuba	96.4	—	—
81	Chile	96.34	C+	37.8
82	Uruguay	96.09	C+	37.9
83	Ethiopia	96	D-	10.3
84	Kazakhstan	95.92	C+	35.1
85	Jordan	95.73	C-	26.0
86	Maldives	95.71	—	—
87	Philippines	95.68	C-	26.6
88	Ukraine	95.66	C+	38.3
89	Bolivia	95.56	D+	22.3
90	Ecuador	95.45	C-	25.3
91	Brazil	95.44	C+	36.2
92	Trinidad and Tobago	94.81	—	—
93	Libya	94.76	—	—
94	Mauritius	94.66	C	31.7
95	Colombia	94.62	C-	27.9
96	Kyrgyzstan	94.48	C-	27.2
97	Bahrain	94.25	C-	29.6
98	Saudi Arabia	94.07	C	30.2
99	Costa Rica	93.8	C	32.4
100	Mexico	93.64	C	30.7
101	South Africa	93.63	C	33.0
102	Iraq	93.62	—	—
103	Yemen	93.43	—	—
104	Tajikistan	93.39	D+	23.1
105	Reunion	93.25	—	—
106	Kuwait	93.13	C-	29.8
107	Cambodia	93.12	D	16.1
108	Zambia	93.05	D	18.9
109	Puerto Rico	93.01	—	—
110	Laos	92.97	D	18.8
111	Palestine	92.94	—	—
112	Nigeria	92.76	D-	13.9
113	Venezuela	92.61	C-	26.8
114	Paraguay	92.38	D+	24.5
115	Senegal	92.26	D-	13.2
116	Oman	92.18	C-	27.1
117	Jamaica	92	C-	26.7
118	Benin	91.96	D-	12.8
119	Kenya	91.69	D	19.3
120	Panama	91.65	C-	28.8
121	Zimbabwe	91.64	D-	11.7
122	Ghana	91.4	D	17.4
123	Guatemala	91.35	D+	22.8
124	Cameroon	90.59	D	17.8
125	Honduras	90.41	D+	20.2
126	Ivory Coast	90.37	—	—
127	Mozambique	90.33	D-	10.9
128	Namibia	90.29	D	18.9
129	Dominican Republic	90.11	D+	23.9
130	El Salvador	90	D+	21.7
131	Indonesia	89.96	D+	23.7
132	Botswana	89.72	D+	23.9
133	Tanzania	89.57	D-	14.4
134	Afghanistan	89.31	—	—
135	DR Congo	88.6	—	—
136	Uganda	88.49	D-	12.4
137	Gabon	88.35	—	—
138	Angola	87.89	—	—
139	Nicaragua	87.75	D+	22.5
140	Rwanda	86.9	D-	9.9
141	Timor-Leste	86.7	—	—
142	Somalia	83.84	—	—
—	Madagascar	—	D-	9.0
—	Mali	—	D-	9.9
—	Malawi	—	D-	10.7
—	Chad	—	D-	10.3
—	Guinea	—	D-	6.8
—	Burundi	—	D-	8.8
—	Mauritania	—	D-	11.6
—	Lesotho	—	D	16.1

What correlates with Average IQ (IIT) (2025)?

Pearson r against 1,577 other country metrics sharing at least 86 countries. Ranks are read by standing: a better rank counts as higher, whether rank 1 is the best place on a list or the worst. Correlation is not causation.

Higher together

Places that have a higher Average IQ (IIT) tend to score higher on these (or rank better)

Average Age Upon Birth of First Child (CIA)Average Age of Having First Child by Country
r = +0.77 · very strong · n = 93
Plot
LP EducationLegatum Prosperity IndexA rank: rank 1 is the best
r = −0.75 · very strong · n = 134
Plot
Median AgeMedian Age by Country
r = +0.75 · very strong · n = 139
Plot
GDI Female Life ExpectancyGender Development Index by Country
r = +0.72 · very strong · n = 136
Plot
LPI Health ScoreBest Healthcare in the World
r = +0.72 · very strong · n = 134
Plot
Nutrition & Medical CareSocial Progress Index by Country
r = +0.72 · very strong · n = 133
Plot

Opposite directions

Places that have a higher Average IQ (IIT) tend to score lower on these (or rank worse)

% ChildrenChildren in the World by Country
r = −0.73 · very strong · n = 137
Plot
Aged 0-14Age Structure by Country
r = −0.73 · very strong · n = 141
Plot
Crude Birth Rate (UN)Birth Rate by Country
r = −0.73 · very strong · n = 138
Plot
Crude Birth Rate (CIA)Birth Rate by Country
r = −0.72 · very strong · n = 140
Plot
Fertility Rate - Age 15-19Total Fertility Rate
r = −0.71 · very strong · n = 141
Plot
Total Fertility Rate (Avg. Births Per Woman) 2015-2020Pronatalist Countries
r = −0.71 · very strong · n = 136
Plot

Quick answers

Which country has the highest Average IQ (IIT)?: Hong Kong has the highest Average IQ (IIT) in 2025, at 107.73, followed by South Korea (106.97) and China (106.48).
Which country has the lowest Average IQ (IIT)?: Somalia has the lowest Average IQ (IIT) in 2025, at 83.84.
What is the median Average IQ (IIT) across countries?: The median is 97.12 across the 142 countries with data in 2025.
Where does this average iq by country data come from?: Rankodex compiles it from World Population Review and the primary sources it cites: Average IQ by country (2025 update) - The International IQ Test; Intelligence Capital Index - Kailchan; Pisa 2022 - OECD; Intelligence related to income and climate - World Data. Last updated 2026-10-28.