Population
|
City
|
8,047,000
|
New York City
|
7,236,000
|
London
|
4,965,000
|
Paris
|
4,168,000
|
Tokyo
|
4,025,000
|
Berlin
|
3,730,000
|
Ruhr
|
3,315,000
|
Chicago
|
2,306,000
|
Manchester
|
2,302,000
|
Philadelphia
|
2,275,000
|
Buenos Aires
|
2,210,000
|
Boston
|
1,889,000
|
Osaka
|
1,845,000
|
Vienna
|
|
Population
|
City
|
1,820,000
|
Calcutta
|
1,700,000
|
Shanghai
|
1,694,000
|
Birmingham
|
1,630,000
|
Glasgow
|
1,545,000
|
Hamburg
|
1,445,000
|
Leeds
|
1,325,000
|
Rio de Janeiro
|
1,275,000
|
Bombay
|
1,261,000
|
Pittsburgh
|
1,225,000
|
Budapest
|
1,201,000
|
Liverpool
|
1,199,000
|
Detroit
|
1,070,000
|
Brussels
|
|
Population
|
City
|
1,000,000
|
Constantinople
|
978,000
|
St. Louis
|
950,000
|
Moscow
|
924,000
|
Cleveland
|
920,000
|
Warsaw
|
910,000
|
Sydney
|
905,000
|
San Francisco
|
900,000
|
Peking
|
865,000
|
Cairo
|
855,000
|
Cologne
|
839,000
|
Los Angeles
|
810,000
|
Frankfurt
|
|
Population
|
City
|
800,000
|
Tientsin
|
800,000
|
Wuhan
|
800,000
|
Canton
|
798,000
|
Newcastle
|
775,000
|
Melbourne
|
762,000
|
Naples
|
747,000
|
Baltimore
|
742,000
|
Madrid
|
741,000
|
Montreal
|
725,000
|
Barmen-Elberfeld
|
720,000
|
Petrograd
|
704,000
|
Copenhagen
|
|
I found a german wikipedia article about the population that only accounts for people in the city limits and it shows just over 400.000 inhabitants in 1930, then a significant drop due to the war and after a period of growth there's a steady but small decline up to today's ca. 350.000. It doesn't look like Wuppertal lost a lot of population, just a bit due to decreasing importance.
Here's the article if you want to look at it:
https://de.m.wikipedia.org/wiki/Einwohnerentwicklung_von_Wuppertal
And today the Ruhr, the Wuppertal area, and the Düsseldorf/Cologne/Bonn area are one big urban area (Rhein-Ruhr-Area). It makes no sense to sepearate them in these quizzes (at least in all the quizzes about the situation today).