Surface area is a country's total area, including areas under inland bodies of water and some coastal waterways.
| 1970 | 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Czech Republic | 78,870 | 78,870 | 78,870 | 78,870 | 78,870 | 78,870 | 78,870 | 78,870 | 78,870 | 78,870 | 78,870 | 78,870 | 78,870 | 78,870 | 78,871 | 78,871 | 78,871 |
| Hungary | 93,030 | 93,030 | 93,030 | 93,030 | 93,030 | 93,030 | 93,030 | 93,030 | 93,030 | 93,030 | 93,030 | 93,030 | 93,030 | 93,030 | 93,030 | 93,030 | 93,030 |
| Poland | 3,12,690 | 3,12,690 | 3,12,690 | 3,12,690 | 3,12,680 | 3,12,680 | 3,12,680 | 3,12,680 | 3,12,680 | 3,12,680 | 3,12,680 | 3,12,680 | 3,12,690 | 3,12,690 | 3,12,710 | 3,12,710 | 3,12,720 |
| Slovakia | 49,030 | 49,030 | 49,030 | 49,030 | 49,037 | 49,036 | 49,036 | 49,036 | 49,030 | 49,030 | 49,030 | 49,030 | 49,030 | 49,030 | 49,030 | 49,030 | 49,030 |