| # | Population | Country | Answer | % Correct |
|---|---|---|---|---|
| 5 | 9,650,000 | United States | Chicago | 95%
|
| 2 | 12,600,000 | India | Chennai | 94%
|
| 1 | 17,300,000 | China | Chengdu | 88%
|
| 26 | 532,513 | Moldova | Chisinau | 85%
|
| 4 | 10,900,000 | China | Chongqing | 82%
|
| 7 | 5,000,000 | Bangladesh | Chittagong | 80%
|
| 9 | 2,600,000 | United States | Charlotte | 73%
|
| 3 | 11,000,000 | China | Changsha | 58%
|
| 11 | 1,470,000 | Russia | Chelyabinsk | 54%
|
| 16 | 1,060,000 | Mexico | Chihuahua | 54%
|
| 20 | 683,773 | United States | Charleston | 49%
|
| 6 | 5,050,000 | China | Changchun | 36%
|
| 8 | 2,675,000 | India | Chandigarh | 25%
|
| 10 | 1,520,000 | Thailand | Chonburi | 18%
|
| 18 | 1,010,000 | South Korea | Changwon | 14%
|
| 13 | 1,210,000 | South Korea | Cheongju | 11%
|
| 14 | 1,200,000 | China | Changde | 10%
|
| 22 | 663,200 | Peru | Chiclayo | 9%
|
| 23 | 614,892 | North Korea | Ch'ongjin | 9%
|
| 17 | 1,030,000 | China | Chuzhou | 8%
|
| 15 | 1,160,000 | China | Chifeng | 7%
|
| 12 | 1,230,000 | China | Changzhi | 5%
|
| 24 | 604,354 | China | Chengde | 4%
|
| 19 | 819,883 | China | Chenzhou | 4%
|
| 21 | 682,199 | South Korea | Cheonan | 2%
|
| 25 | 580,995 | China | Chaoyang | 1%
|