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Top 50 Largest City in Each Country Ending in 'o'

Try to name the top 50 of the largest city in each country that ends in the letter 'o'.
Using the English language spelling or the spelling most commonly used on English language quizzes on JetPunk
Based on metro area/urban agglomeration/combined urban area population figures from citypopulation.de
There are 2 answers for Italy, see comments for explaination
Quiz by
stubart409
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Last updated: November 20, 2025
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First submittedJuly 1, 2025
Times taken113
Average score47.1%
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#
Population
Country
Answer
1
41,200,000
Japan
Tokyo
2
22,800,000
Egypt
Cairo
3
22,600,000
Brazil
São Paulo
4
9,600,000
United States
Chicago
5
8,400,000
Chile
Santiago
6
7,850,000
Canada
Toronto
7
7,700,000
China
Qīngdăo
8
5,700,000
Mali
Bamako
9
5,350,000
Nigeria
Kano
10
4,975,000
Sri Lanka
Colombo
11
3,900,000
Dominican Republic
Santo Domingo
12
3,150,000
Madagascar
Antananarivo
13
2,875,000
Ecuador
Quito
14
2,825,000
Venezuela
Maracaibo
15
2,575,000
Mozambique
Maputo
16
1,980,000
Syria
Aleppo
17
1,810,000
Uruguay
Montevideo
18
1,750,000
Mexico
Queretaro
19
1,710,000
Philippines
Davao
20
1,550,000
Portugal
Porto
21
1,510,000
Argentina
Rosario
22
1,320,000
Ukraine
Dnipro
23
1,270,000
Norway
Oslo
24
1,100,000
Burkina Faso
Bobo-Dioulasso
25
1,025,100
Peru
Trujillo
26
906,400
Italy
Bergamo
27
872,186
Spain
Bilbao
28
859,500
Italy
Palermo
28
812,088
Vietnam
Can Tho
29
665,952
Zimbabwe
Bulawayo
30
600,751
Angola
Lubango
31
544,600
Russia
Kemerovo
32
531,600
Colombia
Villavicencio
33
471,409
Tanzania
Morogoro
34
398,510
Czechia
Brno
35
394,683
Indonesia
Manado
36
358,717
Belarus
Grodno
37
358,000
Somalia
Kismayo
38
348,363
Bosnia and Herzegovina
Sarajevo
39
310,531
North Korea
Namp'o
40
264,943
Bolivia
Oruro
41
264,320
Benin
Porto-Novo
42
257,000
Equatorial Guinea
Malabo
43
254,424
Myanmar
Bago
44
243,048
Cote d'Ivoire
Korhogo
45
240,924
Suriname
Paramaribo
46
232,300
Costa Rica
Cartago
47
224,509
South Korea
Mokpo
48
223,075
Sierra Leone
Bo
49
213,375
Cuba
Guantanamo
50
211,964
Iraq
Zakho
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4 Comments
stubart409
+1
Level 69
Jul 1, 2025
Usually when I do these quizzes I make judgement calls on whether satellite cities are in the metro area of larger cities or not, based on the various info on citypopulation.de. No matter what choices I make I get annoyed comments from JetPunk users, often condescending in tone, and incredulous at my inclusion/exclusion of such and such a city...what am I a fool, it's missing, or conversely how could I possibly include such a city, EVERYONE knows that it is a part of Blah Blah MegaTown Agglomeration, are you an Idiot! And I get it, I lived in Brisbane for over 30 years of my life, and not once did I ever think that the Gold Coast was a part of Brisbane, and I still don't think it is or should be counted as a part of Brisbane's population.
stubart409
+1
Level 69
Jul 1, 2025
So when doing this quiz I could not decide whether to include or exclude Bergamo, on the basis of the fact that the Milan entry on the 'Major Urban Agglomerations of the World' includes Bergamo in Milan, but when you go to the 'Major Urban Areas' page in the Italy section, suddenly it is not included. So I decided that we live in a multiverse where it was both right and wrong, and I included it AND Palermo, because I could not make a decision either way because it seemed that either decision was just as plausible. So there you have it, the ultimate Fence Sitting Bastards Guide to making quizzes on JetPunk.
IbnBattuta
+1
Level 56
Nov 17, 2025
Oruro is spelled wrong.

Also you have Italy twice, Bergamo is redundant

stubart409
+1
Level 69
Nov 20, 2025
Oruro is now fixed.

As for Bergamo being redundant, I have devoted a small essay immediately above your comment explaining why this is the case. I even placed a caveat at the top directing people to this explaination. Did you not even think to look before posting your comment?

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