| Functional urban areas | 2019 | 2020 |
|---|---|---|
| Sofia | 756.5 | 801.6 |
| Plovdiv | 265.7 | 265.7 |
| Varna | 194.8 | 164.1 |
| Burgas | 96.2 | 96.4 |
| Pleven | 89.2 | 83.6 |
| Ruse | 80.0 | 77.3 |
| Vidin | 25.0 | 24.4 |
| Stara Zagora | 68.2 | 65.5 |
| Sliven | 50.2 | 58.3 |
| Dobrich | 42.7 | 43.6 |
| Shumen | 45.4 | 35.4 |
| Yambol | 37.8 | 30.8 |
| Haskovo | 29.5 | 29.0 |
| Pazardzhik | 58.5 | 52.4 |
| Blagoevgrad | 26.0 | 25.5 |
| Veliko Tarnovo | 34.1 | 30.3 |
| Vratsa | 17.4 | 22.8 |
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