Average IQ in Republic of the Congo
Republic of the Congo has an average IQ of 73, ranking #180 out of 195 countries globally. This is considered below the global average on the worldwide scale.
Key Statistics
Education System in Republic of the Congo
The Republic of the Congo provides 10 years of compulsory education in French. Oil wealth has funded education expansion, though quality varies between Brazzaville and rural areas.
IQ and Economic Development
Republic of the Congo's GDP per capita of $4,920 reflects a lower-income economy. Research shows a moderate correlation (r ≈ 0.7) between national GDP and measured IQ, though this relationship is complex and bidirectional.
With 6.5 average years of schooling and a 3.5% GDP investment in education, Republic of the Congo has room to increase education investment relative to GDP.
Countries with Similar IQ Scores
Africa Rankings
| # | Country | Avg IQ |
|---|---|---|
| 1 | Mauritius | 92 |
| 2 | Morocco | 87 |
| 3 | Tunisia | 87 |
| 4 | Egypt | 86 |
| 5 | Algeria | 86 |
| 6 | Seychelles | 86 |
| 7 | Libya | 85 |
| 8 | South Africa | 84 |
| 9 | Nigeria | 84 |
| 10 | Madagascar | 84 |
Data Sources for Republic of the Congo
National IQ estimates are approximate and based on meta-analyses of available cognitive testing data (Becker, 2019; Lynn & Vanhanen, 2012; World Population Review, 2025). These scores reflect measured test performance and are influenced by education, nutrition, healthcare, and socioeconomic factors — they do not measure innate intelligence. Within-country variation is much larger than between-country differences. IQ tests developed in Western contexts may not translate fairly across all cultures. Interpret with appropriate caution.
See the full methodology on our main IQ by Country page for complete source descriptions and data quality notes.
Frequently Asked Questions
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