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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Belize | 98.9 | 39.3 | 24.5 | 21.0 | 18.8 | 18.3 | 17.7 | 17.0 | 16.3 | 15.6 | 15.0 | 14.4 | 13.9 | 13.5 | 13.2 | 13.0 | 12.8 | 12.7 |
| Costa Rica | 74.8 | 16.9 | 13.1 | 11.3 | 10.5 | 10.2 | 9.8 | 9.5 | 9.2 | 9.0 | 8.9 | 8.9 | 8.9 | 9.1 | 9.4 | 9.7 | 10.1 | 10.5 |
| Dominican Republic | 123.6 | 59.5 | 39.8 | 36.2 | 35.1 | 35.0 | 34.9 | 35.0 | 35.0 | 35.0 | 35.0 | 35.0 | 34.7 | 34.3 | 33.8 | 33.1 | 32.2 | 31.4 |
| El Salvador | 149.8 | 59.4 | 32.3 | 24.0 | 18.4 | 17.5 | 16.7 | 15.9 | 15.2 | 14.5 | 13.9 | 13.3 | 12.7 | 12.2 | 11.7 | 11.2 | 10.8 | 10.4 |
| Guatemala | 171.2 | 80.4 | 52.1 | 42.6 | 34.8 | 33.3 | 32.0 | 30.7 | 29.4 | 28.3 | 27.2 | 26.3 | 25.4 | 24.5 | 23.7 | 22.8 | 22.1 | 21.4 |
| Honduras | 145.9 | 58.1 | 37.3 | 29.8 | 24.6 | 23.7 | 22.8 | 22.0 | 21.2 | 20.5 | 19.8 | 19.1 | 18.4 | 17.8 | 17.2 | 16.6 | 16.0 | 15.5 |
| 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 |
| Panama | 67.8 | 30.5 | 25.6 | 21.7 | 18.6 | 18.1 | 17.7 | 17.5 | 17.3 | 17.2 | 17.0 | 16.8 | 16.5 | 15.9 | 15.2 | 14.5 | 13.9 | 13.3 |