Source Data Reference for:
City = Porto
Time = 1850
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Oporto | 1825 | 79,000 | Tertius Chandler | Four thousand years of urban growth | p518 | ||
| Porto | 1850 | 74,000 | Paul Bairoch | La population des villes europeennes de 800 a 1850 | |||
| Porto | 1850 | 99,000 | Tertius Chandler | Four thousand years of urban growth | p24 | ||
| Oporto | 1851 | 100,000 | passed for the 1st time | Tertius Chandler | Four thousand years of urban growth | p542 | |
| Porto | 1864 | 89,200 | n/a | Gothaischer Hofkalender |