UNESCO says 739 million adults cannot read or write
More than three-quarters of the world’s illiterate people are concentrated in sub-Saharan Africa and South Asia, underscoring an education deficit that is becoming a drag on long-term growth, productivity and digital inclusion.
UNESCO’s latest figures show 739 million people globally still cannot read or write, with 225 million in sub-Saharan Africa and 347 million in South Asia. That means the world’s two biggest pools of low-income and fast-growing labor supply are also the regions most exposed to weak basic schooling, a mismatch that complicates efforts to lift household incomes, expand tax bases and support industrial upgrading.
The economic cost goes well beyond literacy rates. UNESCO said four in 10 students worldwide fail to reach minimum reading standards by the end of primary school, while 273 million children and young people remain out of school. For governments already facing fiscal strain, conflict exposure and rapid population growth, those numbers imply a widening gap between labor-market demand and the skills workers actually possess.
That gap matters for investors because it shapes the productivity ceiling for some of the world’s fastest-growing consumer markets and most important manufacturing and services hubs. Low literacy and weak foundational learning limit adoption of technology, reduce the returns on infrastructure spending and slow the buildout of formal employment, leaving economies more dependent on low-productivity work and vulnerable to social pressure.
UNESCO said it has stepped up support for governments by helping strengthen national strategies, improve data collection and train educators. Its literacy programmes reached more than 460,000 learners across 43 countries in 2024 and 2025, and helped 22 countries update education policies. But the scale of the challenge remains far larger than current interventions, especially as the agency also pushes digital skills and media literacy to prevent further exclusion in the transition to a more technology-driven economy.
The message for policymakers is that literacy is no longer just a social policy issue; it is a growth constraint and a competitiveness issue. For investors, the divide points to a long-run bifurcation between countries able to convert young populations into productive labor forces and those that risk remaining stuck with under-skilled workforces and slower returns on capital.
| Entity | Gains | Losses |
|---|---|---|
| UNESCO and reform-minded governments | ▲Policy urgency, funding case | ▼Pressure to deliver faster results |
| Learners in supported countries | ▲Better access to literacy and digital skills | ▼Delayed benefits from slow rollout |
| Economies in sub-Saharan Africa and South Asia | ▲Potential productivity gains | ▼Growth if skills gaps persist |
| Investors in long-horizon emerging markets | ▲Future labor-force upside | ▼Returns in low-skill, low-productivity economies |