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Cities With One Million People by Letter - O

Name all the cities beginning with the letter O that have one million people living within it's metropolitan area. Use the world map to help you.
according to citypopulation.de
thanks to scambigol for the data!
Last updated: June 20, 2017
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City
Odessa
Okayama
City
Oklahoma City
Omsk
City
Onitsha
Oran
City
Orlando
Osaka
City
Oslo
City
Ottawa
City
Ouagadougou
+1
level 73
Jun 20, 2017
Oh yeah... Oran. Should have gotten that one. I used to think it was funny that it was similar to "Orat" from Space Quest 3.
Only one I missed that I had heard of. Also missed the bottom two.