United States

The headline figure on this page, the Human Development Index (2022), is a composite statistic published by UNDP. It is calculated as the geometric mean of three dimensions: a long and healthy life measured by life expectancy, knowledge measured by the education index, and a decent standard of living measured by the income index. United States's HDI of 0.921 is therefore not a single measurement but a summary of three underlying numbers shown in the indicator overview above.

Reading the three components together shows an uneven profile. Among the dimensions available, United States scores highest on life expectancy (77.2) and lowest on income (0.850). Because the HDI is a geometric mean, a country cannot compensate for a weak dimension by excelling in another, so this spread matters more than any single component in isolation.

These figures should be read with their limitations in mind. They are national averages for a single reference year, which can mask substantial regional and demographic differences within the country. The HDI also deliberately covers only three dimensions: it does not capture inequality, political freedom, environmental conditions, or personal security. Figures are drawn from UNDP and reflect the most recent year available in this dataset, not necessarily the current year.