Latgalian language
Latgalian is spoken in Latgale, the eastern part of Latvia. It is debated whether it is a separate language or a distinct dialect of Latvian. Nevertheless, its standardized form is recognized and protected as a "historical variety of the Latvian language" "(vēsturisks latviešu valodas paveids)" by Latvian law. The 2011 Latvian census established that 8.8% of Latvia's inhabitants, or 164,500 people, speak Latgalian daily. 97,600 of them live in Latgale, 29,400 in Riga and 14,400 in the Riga region.
Demographic history of the Vilnius region
The city of Vilnius, now the capital of Lithuania, and its surrounding region have at various times come under Polish-Lithuanian, Russian, Polish, German, and Soviet rule. The population has been categorised by linguistic and sometimes also religious indicators. At the end of the 19th century the main languages spoken were Polish, Lithuanian, Belarusian and Russian. Both Catholic and Orthodox Christianity were represented, while a large proportion of those within the city were Jews. The "Lithuanian" element was seen as declining, while the "Slavic" element was increasing.