Terrestrial protected areas are those officially documented by national authorities.
Terrestrial protected areas as a share of total land area (%)
| 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
| Estonia | 20.1 | 20.1 | 20.1 | 20.2 | 20.2 | 20.2 | 20.6 | 21.2 | 21.3 | 21.4 | 21.4 | 22.0 |
| Latvia | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.5 |
| Lithuania | 16.9 | 16.9 | 16.9 | 16.9 | 17.0 | 17.0 | 17.0 | 17.0 | 17.1 | 17.1 | 17.1 | 17.8 |