| # | Population | Country | Answer | % Correct |
|---|---|---|---|---|
| 7 | 347,693 | 🇺🇸 | Jackson (Missi.) | 97%
|
| 1 | 2,125,000 | 🇺🇸 | Jacksonville (Flor.) | 97%
|
| 2 | 1,640,000 | 🇲🇽 | Juárez | 87%
|
| 3 | 1,210,000 | 🇧🇷 | João Pessoa | 45%
|
| 5 | 705,066 | 🇧🇷 | Joinville | 26%
|
| 18 | 128,519 | 🇺🇸 | Johnson City | 18%
|
| 13 | 159,840 | 🇬🇹 | Jalapa | 13%
|
| 8 | 316,900 | 🇵🇪 | Juliaca | 13%
|
| 4 | 875,786 | 🇧🇷 | Jundiaí | 11%
|
| 6 | 590,479 | 🇧🇷 | Juiz de Fora | 8%
|
| 17 | 137,323 | 🇧🇷 | Jaú | 5%
|
| 12 | 198,400 | 🇧🇷 | Juazeiro | 5%
|
| 11 | 244,380 | 🇧🇷 | Jacarei | 3%
|
| 10 | 282,748 | 🇧🇷 | Jaragua do Sul | 3%
|
| 14 | 153,820 | 🇧🇷 | Jequié | 3%
|
| 9 | 293,000 | 🇧🇷 | Juazeiro do Norte | 3%
|
| 15 | 145,880 | 🇬🇹 | Jutiapa | 3%
|
| 16 | 142,000 | 🇨🇴 | Jamundí | 0%
|