Source Data Reference for:
City = Porto
Time = 2000
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Oporto | 1975 | 860,000 | Tertius Chandler | Four thousand years of urban growth | p512 | ||
| Porto | 1981 | 1,225,000 | Jan Lahmeyer | http://www.populstat.info/ | n/a | ||
| Porto | 1981 | 330,200 | Jan Lahmeyer | http://www.populstat.info/ | n/a | ||
| Porto | 2012 | 1,491,000 | n/a | Demographia Wolrd Urban Areas 8th Annual Edition Version 2 |