The Kashgartsy or Kashgars were a group of Uigurs
who migrated from Kashgar
to the Russian Empire
during the 18th and 19th Centuries. Prior to the 1930s they were classed as a separate ethnic group. The 1926 census counted 13,010 Kashgars in the Soviet Union
Despite their reclassification, there were 18 people who self reported being Kashgars in the 2002 Census of Russia. However since most of the Kashgars had initially migrated to Kazakhstan, Uzbekstan and Kyrgistan this low number in Russia tells us little about how most Kashgars self-identify.
Waxman, Ronald. The Peoples of the USSR: AN Ethnographic Handbook