Source Data Reference for:
City = Philadelphia
Time = 1850
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Philadelphia | 1825 | 138,000 | Tertius Chandler | Four thousand years of urban growth | p489 | ||
| Philadelphia | 1825 | 138,000 | Tertius Chandler | Four thousand years of urban growth | p536 | ||
| Philadelphia | 1825 | 138,000 | Tertius Chandler | Four thousand years of urban growth | p518 | ||
| Philadelphia | 1850 | 426,000 | Tertius Chandler | Four thousand years of urban growth | p490 | ||
| Philadelphia | 1850 | 426,000 | Tertius Chandler | Four thousand years of urban growth | p530 | ||
| Philadelphia | 1850 | 426,000 | Tertius Chandler | Four thousand years of urban growth | p534 | ||
| Philadelphia | 1850 | 426,000 | Tertius Chandler | Four thousand years of urban growth | p536 | ||
| Philadelphia | 1850 | 426,000 | Tertius Chandler | Four thousand years of urban growth | p519 | ||
| Philadelphia | 1850 | 121,400 | Jan Lahmeyer | http://www.populstat.info/ | n/a | ||
| Philadelphia | 1850 | 425,000 | Tertius Chandler | Four thousand years of urban growth | p44 | ||
| Philadelphia | 1861 | 590,000 | Tertius Chandler | Four thousand years of urban growth | p54 | ||
| Philadelphia | 1861 | 590,000 | Tertius Chandler | Four thousand years of urban growth | p540 | ||
| Philadelphia | 1861 | 590,000 | Tertius Chandler | Four thousand years of urban growth | p522 |