Illiteracy is not knowing to read and write.Illiterate person is the one who is uneducated
It is the inability to read or write.
The state of being illiterate, or uneducated; want of learning, or knowledge; ignorance; specifically, inability to read and write.
Illiteracy, according to the United Nations, is the inability to read and write a simple sentence in any language. In 1998, figures showed that 16% of the world population is illiterate (using the UN definition).
In the UK, seven million residents are illiterate, according to government figures. In developed countries, there is the problem of the rise of secondary and tertiary illiteracy in recent years, which is the partial or complete loss of previously existing reading and writing skills due to lack of practice.
In the Arab states, more than 25% of men and 50% of women were not illiterate as of 2000. A likely reason for low levels of literacy is lack of education.
Illiteracy is widespread in India and as of the 2001 census, the literacy rate was only 65.5%, with 34.5% of India being illiterate. India's illiteracy is partly due to its colonial history.
Illiteracy is the inability to read and write.World literacy map UNHD 2007-2008 shows that in India literacy rate is 60 to 70 %, which means that 30 to 40% of the population of india is illiterate. United nation's department UNESCO is working in 3rd World Countries to provide better Education. They live mostly in Africa and South East Asian Countries. Mostly female gender is illiterate. For further information visit this link.
Illiteracy can also be the inability of not speaking a second language .