Costa Rica enjoys one of the highest literacy rates in Latin America and is frequently cited as the only country in Central America that has effectively eradicated mass illiteracy. According to World Bank data, approximately 97 to 98 percent of adults over 15 can read and write, a figure that reflects decades of constitutionally mandated free and compulsory public education.
But behind that impressive headline lies a more complicated reality. According to the most recent national census, 4.3 percent of the Costa Rican population over the age of 15 cannot read or write. Applied to a total population of roughly 5.2 million, that represents well over 100,000 people, and that number almost certainly undercounts the true picture.
Costa Rica is home to one of the largest immigrant communities in Central America, with Nicaraguans making up the dominant foreign-born group. Many arrived with limited formal schooling, having come from rural or marginalized communities where school attendance was irregular or impossible.
When their numbers are factored in alongside older Costa Ricans in rural areas, Indigenous communities, and adults with incomplete primary education, a category the census treats separately but which overlaps significantly with functional illiteracy, the real pool of people who struggle to navigate a written world is considerably larger than official rates suggest.
The shame and secrecy surrounding illiteracy compound the problem. Fear and embarrassment are common among those in this situation, making it difficult to reach them even when programs are available. The Ministry of Public Education, or MEP, does run structured programs to address the gap.
Its Department of Education for Young People and Adults, known as DEPJA, operates under a constitutional mandate in Article 83 of the Costa Rican Constitution to combat illiteracy and provide educational opportunities for those who wish to improve their intellectual, social, and economic condition.
The MEP’s open education programs work in cycles. The first covers literacy through third grade over seven months, with classes held twice a week in the evenings, and many attendees bring their children along. Integrated Adult Education Centers, known as CINDEAs, extend this reach into communities that might otherwise have no access to formal instruction. WhatsApp-based learning and community outreach have also been explored as ways to reduce barriers, particularly in rural and coastal zones where attending a center is logistically difficult.
What tends to go unacknowledged in policy discussions is that people who have not learned to read and write are not cognitively diminished. They are differently adapted.
Research in neuropsychology has found that illiterate adults often develop meaningful compensatory strengths. Studies consistently show that the performance of illiterate individuals is equivalent to that of literate individuals on tasks involving colored and real objects, that is, when the task reflects actual lived experience rather than abstract test formats.
Illiterate subjects tend to focus on individual details of visual information in ways that literate people, trained to process information analytically and categorically, often do not. In practical terms, this can translate into sharper observational skills, stronger pattern recognition in physical environments, and a finely tuned ability to read people and social situations, capacities honed precisely because the written word cannot be relied upon.
Oral memory also tends to be stronger. People who cannot read often develop remarkable abilities to retain information heard in conversation, relying on rhythm, repetition, and context in ways that literate people typically outsource to notes and text messages.
This is where technology has quietly changed daily life. WhatsApp voice notes have become perhaps the single most important communication tool for low-literacy adults in Costa Rica and across Latin America. Rather than typing a message, an insurmountable barrier for someone who cannot read, a person simply presses record and speaks.
The message travels instantly, can be replayed, and requires no reading to interpret. Voice-based navigation on smartphones, audio instructions on YouTube, and the growing prevalence of icon-based interfaces on apps have similarly reduced the friction that written language once imposed on every transaction, from ordering food to paying a bill to navigating public transport.
The combination of sustained institutional effort and accessible technology means that illiteracy in Costa Rica, while persistent, need not be a life sentence of exclusion. The real work, closing the gap between the potentially more than 100,000 adults who cannot read and the programs that could reach them, remains unfinished. But the tools to do it, digital and human, have never been more within reach.
