3,870,000 in Laos, all users. L1 users: 3,070,000 (2005 census). L2 users: 800,000. Total users in all countries: 4,053,700 (as L1: 3,253,700; as L2: 800,000).
Luang Prabang province: south to Cambodia border; widespread throughout Mekong river valley. Nakhon Pathom and Nakhonsawan areas (Lao-Khrang dialect).
1 (National). Statutory national language (2003, Constitution, Article 89).
Luang Prabang, Vientiane (Wiang Jan), Savannakhet, Pakse, Lao-Kao, Lao-Khrang. Dialect subgroup with Northeastern Tai [tts] of Thailand.
SVO; 23 consonants, 20 vowels, 3 diphthongs; tonal (6 tones).
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.