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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Armenia | 49.0 | 30.8 | 24.0 | 18.7 | 17.8 | 17.0 | 16.2 | 15.4 | 14.6 | 14.0 | 13.3 | 12.7 | 12.1 | 11.6 | 11.0 | 10.5 | 10.0 | |
| Azerbaijan | 94.8 | 74.0 | 51.8 | 37.7 | 35.4 | 33.2 | 31.2 | 29.5 | 27.8 | 26.3 | 24.9 | 23.6 | 22.4 | 21.3 | 20.4 | 19.4 | 18.6 | |
| Belarus | 23.0 | 15.2 | 12.8 | 8.7 | 5.6 | 5.2 | 4.9 | 4.6 | 4.3 | 4.1 | 3.9 | 3.6 | 3.4 | 3.1 | 2.9 | 2.7 | 2.6 | 2.4 |
| Kazakhstan | 51.6 | 42.5 | 31.2 | 20.4 | 18.3 | 16.3 | 14.6 | 13.0 | 11.9 | 11.0 | 10.5 | 10.3 | 10.2 | 10.1 | 10.0 | 9.8 | 9.6 | |
| Kyrgyzstan | 65.2 | 50.8 | 39.3 | 29.6 | 27.7 | 26.0 | 24.7 | 23.5 | 22.2 | 21.1 | 20.0 | 19.1 | 18.4 | 17.8 | 17.5 | 17.2 | 17.0 | |
| Republic of Moldova | 33.5 | 31.3 | 20.1 | 16.9 | 16.6 | 16.3 | 16.0 | 15.8 | 15.5 | 15.3 | 15.2 | 15.1 | 15.0 | 14.9 | 14.8 | 14.8 | 14.7 | |
| Russian Federation | 28.8 | 21.7 | 19.4 | 13.9 | 10.4 | 10.2 | 9.9 | 9.5 | 8.9 | 8.2 | 7.5 | 6.9 | 6.3 | 5.8 | 5.4 | 5.1 | 4.7 | 4.5 |
| Tajikistan | 99.2 | 79.7 | 52.2 | 37.0 | 35.2 | 33.6 | 32.3 | 31.2 | 30.2 | 29.4 | 28.8 | 28.3 | 28.1 | 28.0 | 27.9 | 27.7 | 27.3 | |
| Turkmenistan | 79.1 | 69.7 | 52.5 | 43.6 | 42.9 | 42.5 | 42.5 | 42.5 | 42.9 | 43.3 | 43.7 | 43.6 | 43.3 | 42.6 | 41.8 | 41.0 | 40.0 | |
| Ukraine | 19.2 | 18.3 | 14.5 | 11.7 | 11.2 | 10.7 | 10.2 | 9.8 | 9.4 | 9.1 | 8.9 | 8.7 | 8.5 | 8.4 | 8.2 | 8.5 | 8.1 | |
| Uzbekistan | 70.4 | 61.5 | 45.7 | 30.1 | 27.5 | 25.2 | 23.2 | 21.4 | 19.8 | 18.5 | 17.3 | 16.4 | 15.6 | 15.0 | 14.4 | 13.8 | 13.3 |