Table 4.
| Source | Period | Region | Population size |
| Ottoman Empire Tax | 15th century | Balkan Provinces | 17,000 |
| Registries | 16th century | Balkan Provinces | 65,000 |
| 16th century | Bulgaria only | 5,700 | |
| Ottoman Empire | 17th century | Balkan Provinces | 11-15,000 males of |
| Army List | military age | ||
| Austro-Hungarian Empire | 1772 | Transylvania | 39,000 |
| Census Data | 1837 | Transylvania | 53,000 |
| 1893 | Transylvania | 105,000 | |
| Bulgaria | 1881-1885 | Bulgaria | 62,324 |
| Census Data |