L1 users: 200,000 (2006 Mahidol University). Total users in all countries: 307,000.
Phetchabun, Phichit, Chaiyaphum, Lop Buri, Prachin Buri, Chachoengsao, Nakhon Nayok, and Sara Buri provinces; isolated area, Bueng Kan Province; 1 village south of Bangkok.
Strong sense of identity. Socially prominent group. Relocated to Thailand 1827–1890. The name is also used for Lao speakers in Thailand. Buddhist.