Spas-Demensky District (Russian: Спас-Де́менский райо́н) is an administrative[1] and municipal[5] district (raion), one of the twenty-four in Kaluga Oblast, Russia. It is located in the west of the oblast. The area of the district is 1,369 square kilometers (529 sq mi).[3] Its administrative center is the town of Spas-Demensk.[3] As of the 2021 Census, the total population of the district was 7,369, with the population of Spas-Demensk accounting for 62.0% of that number.[7]
^Всесоюзная перепись населения 1979 г. Национальный состав населения по регионам России [All Union Population Census of 1979. Ethnic composition of the population by regions of Russia] (XLS). Всесоюзная перепись населения 1979 года [All-Union Population Census of 1979] (in Russian). 1979 – via Demoscope Weekly (website of the Institute of Demographics of the State University—Higher School of Economics.