Hopi is an Uto-Aztecan language spoken in northeastern Arizona in the USA. According to the 2010 census there are 6,800, and in 1990 there were 40 monolingual Hopi speakers. The language is still being passed on to children and about three quarters of the Hopi people speak Hopi as a native language.
There are four main varieties of Hopi: First Mesa or Polacca; Mishongnovi or Toreva; Shipaulovi or Sipaulovi, and Third Mesa or Oraibi. They were identified by Benjamin Whorf, who was the first to analyse the Hopi language and who focused on the Mishongnovi variety.
There is a Hopi-English dictionary edited by Emory Sekaquaptewa, and the language is promoted by the Hopi Literacy Project. There are also bi-lingual education programs in Hopi in Arizona.
Hopi has an interesting way of expressing concepts of time and space: for something that happens a long way from a speaker is described as having happened in the distant past.
More Hopi numbers
Lord's Prayer in Hopi
KUYI Hopi Radio
The Hopi Tribe - official website
The Hopi Foundation (Lomasumi'nangwtukwsiwmani)
Hopi Cultural Preservation Office
Mesa Media - Hopilavayi pavan öqawi'yta / Keeping Hopi language vibrant