Koslowka is the administrative center of the Rajons of the same name .
history
The village of Kozlovka was known before the 19th century, received urban-type settlement status in 1938 and town charter in 1967.
Population development
year
Residents
1939
5,710
1959
9,363
1970
11,655
1979
11,871
1989
12,708
2002
13,054
2010
10,359
Note: census data
Individual evidence
↑ a b Itogi Vserossijskoj perepisi naselenija 2010 goda. Tom 1. Čislennostʹ i razmeščenie naselenija (Results of the All-Russian Census 2010. Volume 1. Number and distribution of the population). Tables 5 , pp. 12-209; 11 , pp. 312–979 (download from the website of the Federal Service for State Statistics of the Russian Federation)