Kellog is one of the three localities in which the Ket people, a Yeniseian ethnic group historically widespread along the Yenisey river, live. Their Ket language, the only of the Yeniseian languages to survive to the present day, is thought by some linguists to be related to the Na-Dene languages of Native Americans.[6] It is also the only location in Russia where the Ket language is taught in schools.
Ket people in Kellog speak the Southern Ket dialect, the most widespread of the three Ket varieties. It is distinct from those spoken in the other two Ket localities, Central Ket in Surgutikha and Northern Ket in Maduika.[6]
As of the 2010 Census, the ethnic composition in Kellog was as follows:
^All-Russian Population Census 2010. Results for the Krasnoyarsk Territory. 1.10 The population of the city districts, municipal districts, etc.(in Russian)
^"Об исчислении времени". Официальный интернет-портал правовой информации (in Russian). June 3, 2011. Retrieved January 19, 2019.
^Почта России. Информационно-вычислительный центр ОАСУ РПО. (Russian Post). Поиск объектов почтовой связи (Postal Objects Search) (in Russian)
Законодательное собрание Красноярского края. Закон №10-4765 от 10 июня 2010 г. «О перечне административно-территориальных единиц и территориальных единиц Красноярского края», в ред. Закона №7-3007 от 16 декабря 2014 г. «Об изменении административно-территориального устройства Большеулуйского района и о внесении изменений в Закон края "О перечне административно-территориальных единиц и территориальных единиц Красноярского края"». Вступил в силу 1 июля 2010 г. Опубликован: "Ведомости высших органов государственной власти Красноярского края", №33(404), 5 июля 2010 г. (Legislative Assembly of Krasnoyarsk Krai. Law #10-4765 of June 10, 2010 On the Registry of the Administrative-Territorial Units and the Territorial Units of Krasnoyarsk Krai, as amended by the Law #7-3007 of December 16, 2014 On Changing the Administrative-Territorial Structure of Bolsheuluysky District and on Amending the Krai Law "On the Registry of the Administrative-Territorial Units and the Territorial Units of Krasnoyarsk Krai". Effective as of July 1, 2010.).
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