Chart of Chernigov Governorate language spoken by population (1897)

The Chernigov Governorate covered a total area of 52,396 km², and had a population of 2,298,000, according to the 1897 Russian Empire census. In 1914, the population was 2,340,000. In 1918 it became part of Ukraine and transformed into Chernihiv Governorate.

Reference 1: Number, percentage (%), males and females.

Reference 2: Ukrainian, Russian, Belarusian, Yiddish, German, Polish, Persons that didn't name their native language, Other[2] and Total.

Source: http://en.wikipedia.org/wiki/Chernigov_Governorate