Neonatal mortality rate is the number of neonates dying before reaching 28 days of age, per 1,000 live births in a given year.
| 1970 | 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Albania | 12.6 | 12.1 | 10.5 | 6.7 | 6.3 | 6.1 | 5.9 | 5.9 | 6.0 | 6.3 | 6.7 | 7.0 | 7.1 | 7.2 | 7.1 | 7.0 | 6.9 | |
| Bosnia and Herzegovina | 11.3 | 6.6 | 5.2 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.7 | 4.6 | 4.5 | |
| Bulgaria | 13.5 | 7.9 | 7.9 | 6.0 | 5.1 | 4.9 | 4.7 | 4.5 | 4.3 | 4.1 | 3.9 | 3.7 | 3.4 | 3.2 | 3.0 | 2.8 | 2.7 | 2.6 |
| Croatia | 8.2 | 5.5 | 4.2 | 3.5 | 3.4 | 3.3 | 3.2 | 3.2 | 3.1 | 3.0 | 3.0 | 3.0 | 3.0 | 2.9 | 2.9 | 2.9 | 2.8 | |
| Czechia | 7.2 | 2.7 | 2.2 | 1.7 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.5 | 1.4 | 1.4 | 1.3 | |
| Hungary | 27.9 | 11.1 | 5.7 | 4.1 | 3.4 | 3.3 | 3.2 | 3.0 | 2.9 | 2.7 | 2.5 | 2.4 | 2.3 | 2.2 | 2.2 | 2.2 | 2.2 | 2.1 |
| North Macedonia | 17.6 | 9.0 | 8.8 | 6.8 | 6.6 | 6.8 | 7.3 | 7.9 | 8.2 | 7.9 | 6.9 | 5.6 | 4.4 | 3.4 | 2.6 | 1.9 | 1.4 | |
| Moldova | 18.4 | 20.2 | 13.8 | 12.5 | 12.3 | 12.1 | 11.8 | 11.7 | 11.5 | 11.3 | 11.2 | 11.1 | 11.0 | 10.9 | 10.9 | 10.8 | 10.8 | |
| Montenegro | 10.9 | 8.5 | 7.0 | 4.4 | 3.9 | 3.4 | 3.0 | 2.6 | 2.3 | 2.0 | 1.7 | 1.5 | 1.3 | 1.2 | 1.1 | 1.0 | 1.0 | |
| Poland | 18.3 | 11.1 | 5.8 | 4.6 | 3.6 | 3.4 | 3.2 | 3.1 | 3.0 | 2.9 | 2.8 | 2.8 | 2.8 | 2.7 | 2.7 | 2.7 | 2.5 | 2.4 |
| Romania | 15.7 | 10.4 | 8.5 | 5.5 | 5.3 | 5.1 | 4.9 | 4.7 | 4.3 | 3.9 | 3.6 | 3.3 | 3.2 | 3.1 | 3.1 | 3.2 | 3.3 | |
| Serbia | 17.5 | 7.7 | 5.6 | 4.7 | 4.6 | 4.5 | 4.3 | 4.2 | 4.0 | 3.8 | 3.7 | 3.6 | 3.5 | 3.4 | 3.3 | 3.3 | 3.2 | |
| Slovak Republic | 8.7 | 5.0 | 3.9 | 3.3 | 3.3 | 3.2 | 3.2 | 3.1 | 3.1 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | |
| Slovenia | 5.8 | 3.2 | 2.4 | 1.9 | 1.8 | 1.7 | 1.7 | 1.6 | 1.6 | 1.5 | 1.5 | 1.4 | 1.4 | 1.4 | 1.3 | 1.3 | 1.3 |