| Title | Population (in millions) | Area km2 | People / km2 |
|---|---|---|---|
| European Union | 454.9 | 3 976 952 | 115 |
| Austria | 8.2 | 83 858 | 98 |
| Vienna | 1.5 | - | - |
| Graz | 0.21 | - | - |
| Belgium | 10.3 | 30 510 | 340 |
| Brussels | 0.96 | - | - |
| Cyprus | 0.8 | 9 250 | 84 |
| Famagusta | - | - | - |
| Slovenia | 1.9 | 20 253 | 99 |
| Ljubljana | 0.27 | - | - |