Illiteracy in the world is not a remnant of the past on its way out, but a living figure measured every year. According to the latest UNESCO data for 2024, 739 million adults still lack basic reading and writing skills (UNESCO, International Literacy Day 2025). That is one in every nine adults in the world who cannot read a medicine prescription, a work contract or a message from their child’s school.
How big is illiteracy in the world today?
The full picture as UNESCO recorded it for 2024:
| Indicator | Value (2024) | Comparison |
|---|---|---|
| Adults without basic reading and writing skills | 739 million | 754 million in 2023 |
| Adult literacy rate | 88% | 86% in 2015 |
| Youth literacy rate (15 to 24 years) | 93% | Higher than the adult rate |
| Women within the total | 466 million | About two thirds of those who are illiterate |
| Sub-Saharan Africa | 225 million | 196 million in 2015 |
More than half of the world’s illiterate people, 441 million people, live in only ten countries (UNESCO, 2025). This heavy concentration means illiteracy in the world is a specific geographic problem more than a phenomenon spread evenly.
Why does the number rise while the rate improves?
This is the paradox that explains why efforts seem powerless despite succeeding. In sub-Saharan Africa the literacy rate rose from 65 percent in 2015 to 69 percent in 2024, a real improvement. Yet the number of illiterate people in the same region rose from 196 million to 225 million.
The reason is that population growth outpaces the pace of education. When the population grows faster than schools expand, the percentage improves and the absolute number rises at the same time. So measuring success by the rate alone gives a more reassuring picture than it should.
The other side of the matter is the challenges of education that keep 273 million children and adolescents out of school (UNESCO). Every child out of school today is a potential illiterate adult in ten years.
Why are two thirds of the illiterate women?
466 million women out of 739 million, about two thirds. This is not an incidental gap but the accumulated result of centuries of prioritizing boys’ education when resources are scarce. When the cost of education is not enough for all children, the girl leaves first.
The effect does not stop with her. A mother who cannot read is less able to follow her children’s education, has less access to health information, and a weaker position in the labor market. That is why women’s illiteracy is the form of illiteracy most passed on to the next generation, and it is the link that education breaks in the cycle of hardship.
Where is illiteracy in the world concentrated?
- Sub-Saharan Africa: 225 million adults, with a literacy rate of 69%.
- Central and South Asia: the literacy rate rose from 72% in 2015 to 77% in 2024, and the region remains the second largest concentration of illiterate people.
- Ten countries alone hold 441 million, more than half of the world total.
This concentration is good news in practice: a problem spread over ten countries can be addressed with focused interventions, unlike a problem spread everywhere. Geography here simplifies the task instead of complicating it, because limited resources go where they make the biggest difference instead of being spread evenly across the world.
It is worth noting that illiteracy is not a single state. Between those who never entered school, those who entered and dropped out before their skills were secure, and those who completed school years without reaching the expected reading level, there are differences that call for different solutions. The third case is the most hidden, because the person appears in statistics as enrolled in education while in practice outside learning.
How is illiteracy in the world treated?
The youth rate of 93 percent is the proof that the solution works: every generation that enters school comes out less illiterate than the one before. So the most effective treatment of illiteracy is preventing it from forming in the first place, through two paths:
- Keeping children in school. That means addressing the economic causes of school dropout: hunger, the cost of uniforms and transport, and child labor.
- Adult literacy programs, especially for women, because their effect passes directly to the next generation.
The return on that is documented and varied, from income to health to the stability of societies, which is detailed in the benefits of education.
Frequently asked questions about illiteracy in the world
How many illiterate people are there in the world?
739 million adults lack basic reading and writing skills according to 2024 data, down from 754 million in 2023 (UNESCO).
What share of the illiterate are women?
466 million women out of 739 million, about two thirds of the total. The main reason is the preference for educating boys when family resources are scarce.
Is illiteracy in the world declining?
The rate is falling and the number is not. The adult literacy rate rose from 86% in 2015 to 88% in 2024, but population growth kept the absolute number high, and even raised it in sub-Saharan Africa from 196 to 225 million.
Where are the illiterate concentrated?
More than half of them, 441 million, are in only ten countries, and the two largest concentrations are sub-Saharan Africa and Central and South Asia.
How can I help eradicate illiteracy?
The fastest effect comes from keeping a child in school before they drop out, which is covered by sponsoring a student of knowledge by bearing the cost of their continued study year after year.
Every child who stays in school today is one name fewer in the 739 million tomorrow. Support education through Qatar Charity.
