3,070,000 in Laos (2005 census). Population total all countries: 3,273,180. L2 users: 800,000 in Laos.
Mekong river valley, Luang Prabang south to the Cambodia border. Lao-Khrang dialect is in Nakhonsawan and Nakhon Pathom areas.
1 (National). Statutory national language (2003, Constitution, Article 89).
Lao-Kao, Lao-Khrang, Luang Prabang, Pakse, Savannakhet (Suwannakhet), Vientiane (Wiang Jan). Dialect subgroup with Northeastern Tai [tts] of Thailand.
Also use Lao [lao].
Lao script [Laoo].
The Lao Kao migrated to Thailand and are in Nan, Loei, Saraburi, and elsewhere. Buddhist, Christian, traditional religion.