Ida-Viru County (Estonian: Ida-Viru maakond), (Russian: Ида-Вируский уезд, Ида-Вирумаа) or Ida-Virumaa, is one of 15 counties of Estonia. It is the most north-eastern part of the country. The county contains large deposits of oil shale - the main mineral mined in Estonia. As oil shale is used in thermal power plants, the earth in Ida-Viru contains most of Estonia's energy resources. The capital of the county is the town of Jõhvi which is administratively united with the Jõhvi Parish. In January 2019 Ida-Viru County had a population of 136,240 – constituting 10.3% of the total population in Estonia. It borders Lääne-Viru County in the west, Jõgeva County in the southwest and Russia (Leningrad Oblast) in the east.
|• Total||2,972 km2 (1,147 sq mi)|
|• Density||46/km2 (120/sq mi)|
|ISO 3166 code||EE-44|
In January 2017, the population of Ida-Virumaa was 143,880, which makes it the third largest county in Estonia (after Harju and Tartu counties, which include the capital Tallinn and country's second-largest city Tartu). 44.6% of the population are men and 55.4% women.
In the aftermath of World War II, Estonia was occupied by the Soviet Union and large swaths of Ida-Viru County underwent ethnic cleansing by the Soviet authorities. Estonians, who were forced out of the major population centers, including Narva, were replaced by colonists from Russia. As a result of mass migration from the Soviet Union, Ida-Viru County is now the only county in Estonia where ethnic Russians have largely replaced the indigenous Estonian population.
Ida-Virumaa County is subdivided into eight municipalities, of which four are urban (Estonian: linnad — cities or towns) and four are rural (Estonian: vallad — parishes). There are 217 villages in Ida-Virumaa.
- "Population number, area and density. administrative division as at 01.01.2018". Statistics Estonia. Retrieved 6 July 2019.
- "Population by sex, ethnic nationality and County, 1 January". stat.ee. Statistics Estonia. 2010-04-19. Retrieved 2010-08-19.
- "Maavanem". Retrieved 24 September 2015.
- "Elanike demograafiline jaotus maakonniti". Kohaliku omavalitsuse portaal. Retrieved 2 April 2018.