How infant mortality rates vary across countries and across the development-status groups used in the 2024 WPDS data.
Infant mortality varies substantially across countries.
Each dot represents one country's infant mortality rate — the number of infant deaths per 1,000 live births. Across the 193 countries with data, values range from 1.4 to 72 per 1,000 live births, showing substantial variation across countries.
Grouping by development status shows differences in aggregate infant mortality rates.
The aggregate infant mortality rate is 4 per 1,000 live births for more-developed countries, 29 for less-developed countries, and 40 for least-developed countries, compared with a world aggregate of 27. Even so, each group spans a wide range of individual country values around its group aggregate.
Group aggregates do not describe every country equally well.
Within the less-developed group (aggregate: 29), Singapore has an infant mortality rate of 2.2 and Nigeria has a rate of 70. Kosovo (26), in the more-developed group (aggregate: 4), and São Tomé and Príncipe (12), in the least-developed group (aggregate: 40), also differ substantially from their respective group aggregates.