Definition: Illiterate person
Population censuses - UNECE
An illiterate person is a person who cannot, with understanding, both read and write a short, simple statement on his everyday life.
Hence, a person capable of reading and writing only figures and his/her own name should be considered illiterate, as should a person who can read but not write and one who can read and write only a ritual phrase which has been memorized.
United Nations Statistical Commission and Economic Commission for Europe, “Recommendations for the 2000 censuses of population and housing in the ECE region”, Statistical Standards and Studies, New York and Geneva, 1998