Iceland had the highest level of the Human Development Index (HDI) worldwide in 2023 after adjusting for inequality, with a value of ****. Its Nordic neighbors Norway and Denmark followed behind. Meanwhile, Iceland also topped the HDI not adjusted for inequality.
The Human Development Index (HDI) is a statistic ranking countries around the world by level of human development. It is expressed as a value between 0 and 1. Since 1990, the HDI has been published in the annual Human Development Report of the UNDP. Highly developed countries have a HDI value of at least 0.8. The HDI is based on a large number of indicators, including, life expectancy at birth, literacy rate, education levels and gross national income (GNI) per capita.
The inequality-adjusted Human Development Index (IHDI) takes a country's longevity, income, and education levels into account. Please read more on page 271 in the 2023/24 Human Development Report.
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UNDP. (May 26, 2025). Ranking of countries with the highest inequality-adjusted Human Development Index (HDI) in 2023 [Graph]. In Statista. Retrieved July 15, 2025, from https://www.statista.com/statistics/1462367/countries-with-the-highest-inequality-adjusted-human-development-index-ranking/
UNDP. "Ranking of countries with the highest inequality-adjusted Human Development Index (HDI) in 2023." Chart. May 26, 2025. Statista. Accessed July 15, 2025. https://www.statista.com/statistics/1462367/countries-with-the-highest-inequality-adjusted-human-development-index-ranking/
UNDP. (2025). Ranking of countries with the highest inequality-adjusted Human Development Index (HDI) in 2023. Statista. Statista Inc.. Accessed: July 15, 2025. https://www.statista.com/statistics/1462367/countries-with-the-highest-inequality-adjusted-human-development-index-ranking/
UNDP. "Ranking of Countries with The Highest Inequality-adjusted Human Development Index (Hdi) in 2023." Statista, Statista Inc., 26 May 2025, https://www.statista.com/statistics/1462367/countries-with-the-highest-inequality-adjusted-human-development-index-ranking/
UNDP, Ranking of countries with the highest inequality-adjusted Human Development Index (HDI) in 2023 Statista, https://www.statista.com/statistics/1462367/countries-with-the-highest-inequality-adjusted-human-development-index-ranking/ (last visited July 15, 2025)
Ranking of countries with the highest inequality-adjusted Human Development Index (HDI) in 2023 [Graph], UNDP, May 26, 2025. [Online]. Available: https://www.statista.com/statistics/1462367/countries-with-the-highest-inequality-adjusted-human-development-index-ranking/
