National Statistics Office
Statistics authority
Mongolia's central statistics authority. It coordinates all official statistics under the Law on Statistics, runs the Population and Housing Census and the household surveys that set the poverty line, and publishes data through nso.mn and the 1212.mn portal.
The office traces its origin to 11 November 1924, when a registration division was set up under the Ministry of Internal Affairs after the First Constitution provided for statistical activity. Its chairperson is appointed by the State Great Khural for a six-year term and reports to Parliament (UNESCAP Review of the National Statistical System, May 2024; IMF DQAF).
PEOPLE
B. Batdavaa (Batdavaa Batmunkh)
Chairperson of the National Statistics Office - chair in the UNESCAP review of May 2024 and in NSO statements from 2021 to 2025
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D. Lkhamsuren
Vice-Chairperson - listed in the UNESCAP review of the national statistical system, May 2024
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RECORD
The 2020 census
The 2020 Population and Housing Census counted 3,296,966 people, with average growth of 2.2 percent in 2010-2020 (NSO, Census 2020 Main Report). A register-based interim census was launched in 2025 through e-Mongolia (NSO announcement reported October 2025).
Poverty measurement with the World Bank
The NSO and the World Bank have measured poverty jointly from household surveys since 2002. Their joint estimate put the official poverty rate at 27.8 percent in 2020, about 903,400 people, down 0.6 points from 2018 (World Bank and NSO press release, 30 December 2021).
Multidimensional Poverty Index pilot - 2025
On 15 December 2025 the NSO and UNDP presented a pilot National Multidimensional Poverty Index based on the 2024 Household Socio-Economic Survey: 26.0 percent multidimensionally poor on the pilot method, with full results planned for 2027 from 2026 data (OPHI and UNDP, 15 December 2025).
A filled seal is documented. An open seal is an allegation, source named.
How to read this page. Every line names its source. A line marked ALLEGATION is a claim already published by the named source and already in the public record. Decode Mongolia republishes it as reported, with the source named, and has not verified it. An allegation is not a finding, and nothing on this page is proof of wrongdoing.