| Country | Year | |||||
|---|---|---|---|---|---|---|
| Albania | 2031 | 1,505,871 | 1,560,896 | 3,066,767 | ||
| Andorra | 2031 | 42,249 | 41,149 | 83,398 | ||
| Bosnia and Herzegovina | 2031 | 1,785,860 | 1,885,507 | 3,671,367 | ||
| Gibraltar | 2031 | 14,608 | 14,749 | 29,357 | ||
| Greece | 2031 | 5,076,757 | 5,400,467 | 10,477,224 | ||
| Croatia | 2031 | 1,916,942 | 2,049,377 | 3,966,319 | ||
| Italy | 2031 | 29,860,896 | 32,230,473 | 62,091,369 | ||
| Kosovo | 2031 | 1,053,975 | 996,821 | 2,050,796 | ||
| Montenegro | 2031 | 308,753 | 313,183 | 621,936 | ||
| Macedonia | 2031 | 1,037,915 | 1,053,095 | 2,091,010 | ||
| Malta | 2031 | 206,909 | 208,762 | 415,671 | ||
| Portugal | 2031 | 5,223,166 | 5,395,385 | 10,618,551 | ||
| Serbia | 2031 | 3,202,240 | 3,378,465 | 6,580,705 | ||
| Slovenia | 2031 | 886,827 | 943,931 | 1,830,758 | ||
| San Marino | 2031 | 17,184 | 18,510 | 35,694 | ||
| Spain | 2031 | 25,728,712 | 26,435,360 | 52,164,072 |