Introduction
City in Kaluga Oblast, Russia For other uses, see Kaluga (disambiguation). City in Kaluga Oblast, RussiaKaluga КалугаCityCity centerOld trade rowsTrinity CathedralCosmonautics museumRegional Drama Theatre FlagCoat of armsInteractive map of KalugaKalugaLocation of KalugaShow map of Kaluga OblastKalugaKaluga (Russia)Show map of RussiaKalugaKaluga (European Russia)Show map of European RussiaKalugaKaluga (Europe)Show map of EuropeCoordinates: 54°33′N 36°17′E / 54.550°N 36.283°E / 54.550; 36.283CountryRussiaFederal subjectKaluga OblastFirst mentioned1371Government • BodyCity Duma • City HeadDmitry DenisovArea • Total170.5 km2 (65.8 sq mi)Elevation190 m (620 ft)Population (2010 Census) • Total324,698 • Estimate (2025)324,989 (+0.1%) • Rank55th in 2010 • Density1,904/km2 (4,932/sq mi)Administrative status • Subordinated toCity of Kaluga • Capital ofKaluga Oblast, City of KalugaMunicipal status • Urban okrugKaluga Urban Okrug • Capital ofKaluga Urban OkrugTime zoneUTC+3 (MSK )Postal code248xxxDialing code+7 4842OKTMO ID29701000001City DaySecond Saturday of SeptemberWebsitewww.kaluga-gov.ru Kaluga (Russian: Калу́га, IPA: [kɐˈɫuɡə] ⓘ) is a city and the administrative center of Kaluga Oblast, Russia. It stands on the Oka River 150 kilometers (93 mi) southwest of Moscow. Its population was 337,058 at the 2021 census. Established in the 14th century as a Russian border fortress, Kaluga was notable as a place of exile for political prisoners, leaders and officials of other nations under the Russian Empire, and has served as the seat of regional administration since 1776. Kaluga's most famous resident, the space travel pioneer Konstantin Tsiolkovsky, worked there as a school teacher from 1892 to 1935. The Tsiolkovsky State Museum of the History of Cosmonautics in Kaluga is dedicated to his theoretical achievements and to their practical implementations for modern space research, hence the motto on the city's coat of arms: Колыбель Космонавтики, Kolybélʹ kosmonávtiki ("The Cradle of Space Exploration").