Where are your numbers for Brooklyn coming from? The population <i>was</i> greater in the 1940s and 1950s, but it is still well over 2 million, and still the most populous borough in NYC. (As it seems to have been since 1930s.)<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Brooklyn#Demographics" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Brooklyn#Demographics</a><p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Demographic_history_of_New_York_City" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Demographic_history_of_New_Yor...</a>