Universal IQ TestUniversal IQ Test
Total tested: ...

Average IQ by Country

Here is a grounded look at country averages from our online dataset. It is useful for comparisons, but it is not a census or a clinical study.

Total tests
254,813
Validated N
78,229
Last updated
2026-01-17
View
Current view N: 78,229

Quick answer (top and bottom countries)

Top 5 and bottom 5 countries by mean IQ in the current view, with a minimum sample size of 200.

Top 5 averages
  • China: 106.6 IQ (N=2,555, 95% CI 106 to 107.2)
  • Japan: 105.6 IQ (N=5,236, 95% CI 105.2 to 106)
  • Hong Kong: 104.4 IQ (N=688, 95% CI 103.3 to 105.5)
  • South Korea: 103.8 IQ (N=6,317, 95% CI 103.4 to 104.2)
  • Taiwan: 102.9 IQ (N=1,585, 95% CI 102.2 to 103.6)
Bottom 5 averages
  • Iraq: 95.3 IQ (N=239, 95% CI 93.3 to 97.3)
  • Saudi Arabia: 95.4 IQ (N=312, 95% CI 93.8 to 97)
  • Egypt: 95.5 IQ (N=559, 95% CI 94.3 to 96.7)
  • Ukraine: 96.9 IQ (N=19,573, 95% CI 96.7 to 97.1)
  • Bulgaria: 98 IQ (N=585, 95% CI 96.9 to 99.1)
Takeaways
  • China currently sits near the top with N=2,555 in the Validated view.
  • Across countries, the mean range spans about 74.6 IQ points in this view.
  • Anguilla is still small (N=1), so it can swing more between updates.

IQ map by country

Click a country to jump to its row. Use search to focus on a specific country.

Tip: click a country to jump to its row in the table.
Lower IQ
Higher IQ
Gray indicates no data in the current view.

Country rankings (mean IQ, CI, N)

Full sortable rankings with mean, CI, sample sizes, and validation rate.

Average IQ by Country
95% CI
1China106.6106 to 107.22,5552,55531.0%53:012026-01-17
2Japan105.6105.2 to 1065,2365,23640.2%43:552026-01-17
3Hong Kong104.4103.3 to 105.568868836.0%43:092026-01-15
4South Korea103.8103.4 to 104.26,3176,31730.7%37:512026-01-17
5Taiwan102.9102.2 to 103.61,5851,58534.3%43:182026-01-17
6Italy101.6100.6 to 102.687487428.6%41:252026-01-16
7United States of America101.6100.8 to 102.41,2351,23534.5%47:032026-01-17
8Indonesia101.399 to 103.621021020.5%36:072026-01-10
9Austria101.299.7 to 102.737437441.7%35:592026-01-17
10Canada101.299.6 to 102.841441438.6%42:312026-01-04
11Switzerland101.199.4 to 102.829629634.5%42:282026-01-17
12France101.1100.2 to 10290290236.5%40:132026-01-16
13Sweden101.199.5 to 102.735635633.5%56:152026-01-14
14Belarus10199.9 to 102.160460436.1%39:502026-01-16
15Netherlands101100 to 10292992936.8%39:262026-01-15
16Belgium100.999.1 to 102.725525545.1%36:412026-01-16
17Finland100.999.7 to 102.160360332.4%47:522026-01-17
18Germany100.7100.2 to 101.23,6433,64342.8%44:232026-01-17
19United Kingdom10098.8 to 101.254654636.5%39:282026-01-17
20Greece10098.6 to 101.441941928.8%40:482026-01-17
21Spain99.998.3 to 101.533233233.3%42:042026-01-17
22Russia99.999.6 to 100.212,55112,55130.8%39:592026-01-17
23Hungary99.798.6 to 100.864864834.3%36:392026-01-17
24Norway99.497.6 to 101.231231234.8%40:092026-01-16
25Denmark99.397.5 to 101.132732735.3%36:272026-01-16
26Czech Republic99.198.1 to 100.183383338.2%37:232026-01-17
27Estonia98.997.5 to 100.329429438.8%40:242026-01-17
28Kazakhstan98.897.8 to 99.879679629.6%42:482026-01-17
29Uzbekistan98.897.2 to 100.434334316.8%39:112026-01-17
30Slovakia98.697.8 to 99.41,2251,22534.4%36:372026-01-17
31Turkey98.598 to 992,8172,81724.2%37:342026-01-17
32Algeria98.496.8 to 10030830823.6%36:362026-01-15
33Poland98.397.6 to 991,7341,73434.9%35:112026-01-16
34Brazil98.296.3 to 100.133533527.0%42:492026-01-16
35Romania98.197 to 99.279479428.1%43:112026-01-16
36Bulgaria9896.9 to 99.158558534.9%37:012026-01-17
37Thailand9897.2 to 98.81,3141,31417.3%34:232026-01-11
38Ukraine96.996.7 to 97.119,57319,57332.4%35:382026-01-17
39Egypt95.594.3 to 96.755955923.6%35:242026-01-14
40Saudi Arabia95.493.8 to 9731231226.5%52:482026-01-11
41Iraq95.393.3 to 97.323923922.1%38:152026-01-12
Showing 41 countries.

Compare countries

Compare mean, CI, N, distribution range, time, and validation rate in the current view.

Select a country
Select a country to compare.
Select a country
Select a country to compare.

Sample size by country (N)

Bars are stacked (validated + unvalidated). Showing the top 40 by all-results N.

Validation rate by country

Validated vs all results, plus the validation rate by country.

IQ distribution by country (p10-p90)

Shows the middle 80% (p10 to p90) and the middle half (p25 to p75). Select up to 5.

Select up to 5
85100115
IQ score

Average time taken by country

Average time taken for the top countries by N in the current view.

How to interpret country differences

  • Selection effects: who chooses to take an online test differs by country.
  • Language and device comfort can shift results on timed tasks.
  • Test familiarity and pacing vary across regions and cultures.
  • Repeat attempts, VPN usage, and access patterns can affect averages.
  • Differences are usually small and groups overlap a lot - do not over-interpret rank order.

Method and data notes

  • Country is self-reported and not independently verified.
  • Results are from an online, self-selected dataset - not population norms.
  • This does not mean a country causes higher IQ.
  • Scores start as percentiles, then we rescale them to 100 +/- 15.
  • If you only look at rank order, you will overread tiny differences - check CI and N.

See methodology and limits for the dataset.

Download, cite, and embed

Download CSV of country aggregates
Includes the current view (Validated).
Citation
Universaliqtest. Average IQ by Country (accessed 2026-01-17). https://www.universaliqtest.com/en/statistics/average-iq-by-country
Embed
<iframe src="https://www.universaliqtest.com/en/statistics/average-iq-by-country" width="100%" height="720" loading="lazy"></iframe>

FAQ

Average IQ in the US?

Use the table or compare tool to see the current mean, CI, and sample size.

Why is Country X high in your rankings?

This dataset is self-selected and online. Differences can reflect selection, language, device, and pacing rather than population differences.

Is this scientific or representative?

No. These are online test results summarized as dataset statistics, not population norms.

Does this mean a country causes higher IQ?

No. This page shows associations in our dataset and should not be read as causal.

How do you validate results?

Validated results pass quality checks; all results include unvalidated submissions.

Last updated

Data last updated: 2026-01-17 (latest test submission).
Page refreshed: 2026-01-17 21:12 UTC (site build time).

Related statistics