Tomsk is a city and the administrative center of Tomsk Oblast
Tomsk Oblast
Tomsk Oblast is a federal subject of Russia . It lies in the southeastern West Siberian Plain, in the southwest of the Siberian Federal District. Its administrative center is the city of Tomsk. Population:...

, Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

, located on the Tom River
Tom River
Tom is a river in Russia, a right tributary of the Ob. Its length is 540 miles . Its source is in the Abakan mountains , and it flows northward through the Kuznetsk Basin...

. One of the oldest towns in Siberia
Siberia is an extensive region constituting almost all of Northern Asia. Comprising the central and eastern portion of the Russian Federation, it was part of the Soviet Union from its beginning, as its predecessor states, the Tsardom of Russia and the Russian Empire, conquered it during the 16th...

, Tomsk celebrated its 400th anniversary in 2004. Population:

It is served by the Bogashevo Airport
Bogashevo Airport
Tomsk Bogashevo Airport is an airport that serves Tomsk, Russia. It is located near the Bogashevo village of the Tomsk raion of Tomsk Oblast.The airport opened in November 1967 and replaced another airport within the Kashtak district in the city of Tomsk...

Tomsk is divided into four city districts: Kirovsky, Leninsky, Oktyabrsky, and Sovetsky.

In 2005, the city annexed the settlements of Eushta, Dzerzhinsky, Timiryazevskoye, Zonalny, Loskutovo, Svetly, Kirgizka, and Kopylovo.

Tomsk is located about 20 kilometres (12.4 mi) southeast of the town of Seversk
Seversk is a closed city in Tomsk Oblast, Russia, located northwest of Tomsk on the right bank of the Tom River. Population: Founded in 1949, it was known as Pyaty Pochtovy until 1954 and as Tomsk-7 until 1992. Town status was granted to it in 1956.The current Chair of the City Duma and Mayor...

, a major center of plutonium
Plutonium is a transuranic radioactive chemical element with the chemical symbol Pu and atomic number 94. It is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, forming a dull coating when oxidized. The element normally exhibits six allotropes and four oxidation...

 production and reprocessing and uranium
Uranium is a silvery-white metallic chemical element in the actinide series of the periodic table, with atomic number 92. It is assigned the chemical symbol U. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons...

Tomsk has a humid continental climate
Humid continental climate
A humid continental climate is a climatic region typified by large seasonal temperature differences, with warm to hot summers and cold winters....

 (Köppen climate classification
Köppen climate classification
The Köppen climate classification is one of the most widely used climate classification systems. It was first published by Crimea German climatologist Wladimir Köppen in 1884, with several later modifications by Köppen himself, notably in 1918 and 1936...