Under-five mortality rate is the probability per 1,000 that a newborn baby will die before reaching age five, if subject to current age-specific mortality rates.
| 1970 | 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Antigua and Barbuda | 32.3 | 13.5 | 14.9 | 13.3 | 11.9 | 11.7 | 11.5 | 11.3 | 11.2 | 11.0 | 10.8 | 10.6 | 10.5 | 10.3 | 10.1 | 9.8 | 9.6 | 9.3 |
| Bolivia | 229.4 | 121.7 | 75.7 | 56.4 | 42.0 | 39.7 | 37.5 | 35.4 | 33.5 | 31.8 | 30.3 | 29.0 | 27.8 | 26.7 | 25.7 | 24.8 | 23.9 | 23.1 |
| Cuba | 38.2 | 13.4 | 8.6 | 7.1 | 6.2 | 6.1 | 6.0 | 6.0 | 6.0 | 6.1 | 6.2 | 6.4 | 6.6 | 6.9 | 7.2 | 7.6 | 7.9 | 8.3 |
| Dominica | 54.8 | 18.5 | 19.4 | 21.6 | 25.0 | 25.7 | 26.6 | 27.4 | 28.3 | 29.3 | 30.2 | 31.2 | 32.1 | 33.0 | 33.8 | 34.5 | 35.1 | 35.5 |
| Ecuador | 137.1 | 53.9 | 29.6 | 23.7 | 19.2 | 18.3 | 17.4 | 16.6 | 15.9 | 15.3 | 14.8 | 14.4 | 14.1 | 13.8 | 13.6 | 13.4 | 13.2 | 13.1 |
| Nicaragua | 170.5 | 66.2 | 38.2 | 29.5 | 23.3 | 22.2 | 21.3 | 20.3 | 19.4 | 18.6 | 17.8 | 17.1 | 16.4 | 15.7 | 15.1 | 14.5 | 13.9 | 13.4 |
| Saint Lucia | 71.0 | 20.9 | 18.5 | 18.3 | 18.0 | 17.9 | 17.8 | 17.7 | 17.5 | 17.4 | 17.2 | 17.0 | 16.7 | 16.5 | 16.3 | 16.0 | 15.8 | 15.5 |
| Saint Vincent and the Grenadines | 64.2 | 23.8 | 22.5 | 22.6 | 21.4 | 20.6 | 19.8 | 18.8 | 17.9 | 16.9 | 15.9 | 14.9 | 13.9 | 13.1 | 12.3 | 11.7 | 11.1 | 10.6 |
| Venezuela (Bolivarian Republic of) | 63.0 | 29.6 | 21.5 | 18.5 | 17.2 | 17.3 | 17.6 | 17.9 | 18.3 | 19.2 | 24.3 | 24.3 | 24.3 | 24.3 | 24.3 | 24.3 | 24.3 | 24.3 |