Kustanaysky Uyezd (''Кустанайский уезд'') was one of the subdivisions of the Turgay Oblast of the

Russian Empire The Russian Empire was an empire and the final period of the Russian monarchy from 1721 to 1917, ruling across large parts of Eurasia. It succeeded the Tsardom of Russia following the Treaty of Nystad, which ended the Great Northern War. ...

. It was situated in the northern part of the governorate. Its administrative centre was Kustanay (

Kostanay Kostanay ( kz, Қостанай, Qostanai ) is a city located on the Tobol River in northern Kazakhstan. It was known as Nikolayevsk (russian: Николаевск) until 1895 and then as Kustanay (russian: Кустанай) until 1997. Kostanay ...

Demographics

At the time of the

Russian Empire Census The first general census of the population of the Russian Empire in 1897 ( pre-reform Russian: ) was the first and only nation-wide census performed in the Russian Empire (the Grand Duchy of Finland was excluded). It recorded demographic data as ...

of 1897, Kustanaysky Uyezd had a population of 152,556. Of these, 77.4% spoke Kazakh, 16.9%

Russian Russian(s) refers to anything related to Russia, including: *Russians (, ''russkiye''), an ethnic group of the East Slavic peoples, primarily living in Russia and neighboring countries *Rossiyane (), Russian language term for all citizens and peo ...

, 2.3%

Ukrainian Ukrainian may refer to: * Something of, from, or related to Ukraine * Something relating to Ukrainians, an East Slavic people from Eastern Europe * Something relating to demographics of Ukraine in terms of demography and population of Ukraine * So ...

, 1.3%

Mordvin The Mordvins (also Unified Mordvin people, Mordvinians, Mordovians; russian: мордва, Mordva, Mordvins (no equivalents in Moksha and Erzya)) is an obsolete but official term used in the Russian Federation to refer both to Erzyas and Moks ...

, 1.1%

Tatar The Tatars ()Tatar
in the Collins English Dictionary is an umbrella term for different

and 0.8% Bashkir as their native language.
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References

Kustanaysky Uyezd, Uezds of Turgay Oblast (Russian Empire) Turgay Oblast (Russian Empire) {{Russia-gov-stub