Source Data Reference for:
City = Londonderry
Time = 1900
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Londonderry | 1900 | 38,000 | Tertius Chandler | Four thousand years of urban growth | p500 | ||
| Londonderry | 1901 | 39,900 | Jan Lahmeyer | http://www.populstat.info/ | n/a |