Source Data Reference for:
City = Baghdad
Time = -500
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Seleucia | -320 | 300,000 | "surpassed 300,000" | Tertius Chandler | Four thousand years of urban growth | p524 | |
| Seleucia | -310 | 100,000 | passed for the 1st time | Tertius Chandler | Four thousand years of urban growth | p541 | |
| Seleucia | -300 | 100,000 | George Modelski | World Cities -3000 to 2000 | p55 | ||
| Seleucia on the Tigris | -274 | forcible move from Babylon to Seleucia | Colin McEvedy | Cities of the Classical World | p334 | ||
| Seleucia on the Tigris | -270 | Colin McEvedy | Cities of the Classical World | p335 |