Latvian language
Upper Latvian dialect is spoken in Eastern Latvia. It is set apart from rest of the Latvian by number of phonetic differences. The dialect has two main varieties – Selonian and Non-Selonian. There is a standard language, the Latgalian language, which is based on deep Non-Selonian varieties spoken in south of Latgale. The term "Latgalian" is sometimes also applied to all Non-Selonian varieties or even the whole dialect. However, it is unclear if it is accurate to use the term for any varieties besides the standard language. While the term may refer to varieties spoken in Latgale or by Latgalians, not all speakers identify as speaking Latgalian, for example, speakers of deep Non-Selonian varieties in Vidzeme explicitly deny speaking Latgalian.
Language policy in Latvia
In the 2000 census, 891,451 respondents listed Russian as their mother tongue, representing 37.5% of the total population, whereas Latvian was recorded as the mother tongue for 58.2%. Latvian was spoken as a second language by 20.8% of the population, and 43.7% spoke Russian as a second language. At that time, in age groups up to 10–14 years, a greater proportion of Russians could speak Latvian than ethnic Latvians could speak Russian. In age groups over 15 years, however, more Latvians expressed proficiency in Russian than vice versa. In total, 71% of ethnic Latvians said they could speak Russian, and 52% of Russians could speak Latvian.