Source Data Reference for:
City = Zhengzhou
Time = -1000
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Ao | -1400 | 32,000 | George Modelski | World Cities -3000 to 2000 | p34 | ||
| Ao (Chengchow) | -1360 | 32,000 | Tertius Chandler | Four thousand years of urban growth | p460 | ||
| Ao (Chengchow) | -1360 | 32,000 | Tertius Chandler | Four thousand years of urban growth | p522 | ||
| Ao (Chengchow) | -1360 | 32,000 | Tertius Chandler | Four thousand years of urban growth | p531 | ||
| Ao | -1360 | see Area | Tertius Chandler | Four thousand years of urban growth | p93 | ||
| Ao | -1360 | 32,000 | Tertius Chandler | Four thousand years of urban growth | p532 | ||
| Ao | -1300 | 10,000 | "10,000 or more" | George Modelski | World Cities -3000 to 2000 | p34 | |
| Ao | -1200 | 10,000 | "10,000 or more" | George Modelski | World Cities -3000 to 2000 | p34 | |
| Ao (Chengchow) | -1200 | 20,000 | "top 16 in the world, under 24,000" | Tertius Chandler | Four thousand years of urban growth | p460 | |
| Zhengzhou | -1000 | 10,000 | "10,000 or more" | George Modelski | World Cities -3000 to 2000 | p34 | |
| Zhengzhou | -800 | 1,000 | "below 20,000" | Tertius Chandler | Four thousand years of urban growth | p460 |