[ltg] Eastern, formerly Latgalia region, Balvu, Kraslavas, Ludzas, Preilu, and Rezeknes municipalities; Daugavpils and Jekabpils municipalities north of the Daugava river; generally east of the Balvi–Pechory (Russia) highway. 200,000 (2009 J. Eisaks). Status: 5 (Developing). Alternate Names: Latgaliešu. Autonym: Latgališu. Dialects: None known. Reportedly similar to Latvian [lav] and Lithuanian [lit]. A member of macrolanguage Latvian [lav]. Classification: Indo-European, Balto-Slavic, Baltic, Eastern.
Latvian Sign Language
[lvs] 1,967,000 in Latvia, all users. 1,470,000 (European Commission 2012). 497,000 (European Commission 2012). Total users in all countries: 2,099,460 (as L1: 1,602,460; as L2: 497,000). Status: 1 (National). Statutory national language (1998, Constitution, Article 4). Autonym: Latviešu valoda, Latviski. Dialects: Tamian is a subdialect of the Central Latvian dialect. A member of macrolanguage Latvian [lav]. Classification: Indo-European, Balto-Slavic, Baltic, Eastern. Comments: Christian.
[liv] Northwest, narrow strip along Baltic coast, Dundaga and Ventspils municipalities, 12 coastal villages; Riga city. No known L1 speakers. Last speaker died in 2013. Ethnic population: 200. Status: 9 (Dormant). Alternate Names: Livonian. Autonym: Livõ kel. Dialects: Western Livonian (Kurzeme, Raandalist), Eastern Livonian (Vidzeme). Classification: Uralic, Finnic.
[rml] Western Latvia; Riga. 8,000 (1995 V. Zeps). Status: 5 (Developing). Alternate Names: Balt Romani, Balt Slavic Romani, Baltic Slavic Romani. Dialects: Latvian Romani (Lettish Romani, Lotfitko Romani, Lotfitko Romani cib, Lotfítka Romá), North Russian Romani, Estonian Romani (Čuxny Romani). Classification: Indo-European, Indo-Iranian, Indo-Aryan, Intermediate Divisions, Western, Romani, Northern. Comments: Non-indigenous. Ethnic groups: Lotfítka Romá (western Latvia). Christian.
[rus] 2,058,000 in Latvia, all users. 668,000 (2015). 1,390,000 (European Commission 2012). Status: 3 (Wider communication). De facto national working language. Alternate Names: Krievu. Classification: Indo-European, Balto-Slavic, Slavic, East. Comments: Non-indigenous. Christian, Jewish.