Qarabag.com presents a reference information on demographic data of Gubadly (Kubatlu) (city, district) from 1907 to 1989. In compiling the material official Russian and Soviet sources were used.

City of Gubadly

1907: The population in the village of Kubatlu – 371 people. The majority of the population – Tatars.
[Caucasian calendar as of 1910, p. 299]

1912: The population in the village of Kubatlu – 672 Tatars.
[Caucasian calendar for 1912, p. 174]

1915: In the village of Kubatlu lived 359 Tatars.
[Caucasian calendar for 1915, p. 147]

1939: Population – 1.017
Male – 620
Female – 397
[All-Union Population Census of 1939]

1979: Population – 3.460
Male – 1.739
Female – 1.721
[All-Union Population Census of 1979]

Gubadly district

1926: Population – 13.536
Male – 6.980
Female – 6.556
[Population of Azerbaijan according to the census of December 17, 1926. Preliminary results., p. 13]

1939: Population – 22.026
Male – 11.378
Female – 10.648
[All-Union Population Census of 1939]

1970: Population – 25.748
Male – 12.205
Female – 13.543
[The number of available population of cities, urban-type settlements, districts and district centers of the USSR according to the census data as of January 15, 1970 for republics, territories and regions (except the RSFSR)]

1989: Population – 28.110
Male – 13.802
Female – 14.308
[All-Union Population Census of 1989]