| # | Population | Country | Answer | % Correct |
|---|---|---|---|---|
| 1 | 1,480,000 | Switzerland | Zurich | 99%
|
| 4 | 663,592 | Croatia | Zagreb | 96%
|
| 2 | 733,961 | Spain | Zaragoza | 92%
|
| 8 | 189,367 | United Kingdom | York | 66%
|
| 3 | 710,052 | Ukraine | Zaporizhia | 50%
|
| 16 | 97,370 | Netherlands | Zwolle | 32%
|
| 5 | 577,279 | Russia | Yaroslavl | 31%
|
| 12 | 135,434 | Switzerland | Zug | 22%
|
| 9 | 170,200 | Germany | Zwickau | 20%
|
| 10 | 158,307 | Poland | Zabrze | 18%
|
| 7 | 261,624 | Ukraine | Zhytomyr | 18%
|
| 11 | 140,002 | Poland | Zielona Góra | 13%
|
| 13 | 124,065 | Netherlands | Zoetermeer | 12%
|
| 6 | 281,248 | Russia | Yoshkar-Ola | 7%
|
| 15 | 107,877 | Ukraine | Yevpatoria | 5%
|
| 14 | 119,658 | Russia | Yessentuki | 3%
|