|• Total||2,972 km2 (1,147 sq mi)|
|• Density||45/km2 (120/sq mi)|
|ISO 3166 code||EE-45|
Ida-Viru County (Estonian: Ida-Viru maakond 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. Oil shale is used in the production of shale oil and in thermal power plants. The capital of the county is the town of Jõhvi which is administratively united with the Jõhvi Parish; nevertheless, Narva is the largest town in the county in terms of population and at the same time the third largest city in Estonia after Tallinn and Tartu.
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. It is the only county in Estonia where Russians constitute the majority of population (73.1% in 2010), the second highest being Harju (28%).
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.
By January 2020, the population of Ida-Virumaa had decreased to 134,259, of which 33% were of native origin and 67% of foreign origin.
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 30 July 2022.
- "Population by sex, ethnic nationality and County, 1 January". stat.ee. Statistics Estonia. 2010-04-19. Retrieved 2010-08-19.
- "Maavanem". Archived from the original on 15 March 2017. Retrieved 24 September 2015.
- "Rv071: Native and Foreign-Origin Population by County After the 2017 Administrative Reform, Sex and Age, 1 January".
- "Elanike demograafiline jaotus maakonniti". Kohaliku omavalitsuse portaal. Archived from the original on 2 March 2019. Retrieved 2 April 2018.