UNESCO’s Atlas of the World’s Languages in Danger lists about 2,500 languages, including 230 counted extinct since 1950. That figure sits close to the roughly 3,000 languages linguists generally reckon are endangered worldwide.
How the atlas grades a language
The atlas sorts living languages into four bands, from vulnerable, where most children still speak it at home, to critically endangered, where only grandparents use it, and only rarely. Extinct makes a fifth band. A language counts as extinct once the atlas has found no speaker since the 1950s, and one judged safe does not appear in the atlas at all.
The Guardian’s 2011 review of the data pointed to Ayapaneco, whose last two fluent speakers by then were not speaking to each other.
Linguists judge a language’s health mainly by whether parents still pass it to their children. Ethnologue, a separate language catalogue, notes that a language can keep growing in speaker numbers and still count as endangered, if it survives only in the shadow of a more dominant one.
A project that stalled
UNESCO’s list began in print, as the Red Book of Endangered Languages, after the International Congress of Linguists took up the issue in 1992. It moved online in February 2009, in its third edition, under the linguist Christopher Moseley. Moseley has since written that the online atlas stopped being updated in 2017, and it has taken no public comment since.
In November 2021, UNESCO launched a broader replacement, the World Atlas of Languages, at its General Conference in Paris. The new atlas is meant to cover all 8,324 of the world’s spoken and signed languages, not only the endangered ones, with detailed data for more than 80 countries. Tawfik Jelassi, UNESCO’s assistant director-general for communication and information, said the aim included “combating stigma and discrimination” against minority-language speakers. Officials said the public platform would open in February 2022.
As of June 2026, the World Atlas of Languages was offline until further notice while UNESCO completed its global data set. As of November 2025, UNESCO was also reviewing the original atlas’s endangerment categories, to keep them matched to current data on language vitality.
