Seversk

This article is about the closed city in Tomsk Oblast. For the city in Donetsk Oblast, Ukraine, see Siversk.

Seversk Северск
City
Kurchatova Street in Seversk
Flag Coat of arms
Interactive map of Seversk
Seversk Location of Seversk Seversk Seversk (Tomsk Oblast)
Coordinates: 56°36′N 84°51′E
Country	Russia
Federal subject	Tomsk Oblast
Founded	1949
City status since	1956
Government
• Mayor	Nikolay Didenko
Elevation	90 m (300 ft)
Population  (2010 Census)
• Total	108,590
• Estimate  (2025)	104,982 (−3.3%)
• Rank	149th in 2010
Administrative status
• Subordinated to	Seversk City Under Oblast Jurisdiction
• Capital of	Seversk City Under Oblast Jurisdiction
Municipal status
• Urban okrug	Seversk Urban Okrug
• Capital of	Seversk Urban Okrug
Time zone	UTC+7 (MSK+4 )
Postal code	636000
Dialing code	+7 3823
OKTMO ID	69741000001
Website	seversknet.ru

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Seversk (Russian: Се́верск, IPA: [ˈsʲevʲɪrsk]) is a closed city in Tomsk Oblast, Russia, located 15 kilometers (9.3 mi) northwest of Tomsk on the right bank of the Tom River. The population was 108,590 at the 2010 census and 109,106 at the 2002 census.

It was previously known as Pyaty Pochtovy (until 1949) and Tomsk-7 (until 1992).