If in fact it is true that we don’t include the entire population of Brooklyn, why then are we using the U.S. Census’ population figures for the entire Brooklyn, rather than just the 12×12 mil subset?
Are you saying Reb Moshe, in his teshuva asserting a 3 million population, was saying there was 3 million in just the 12×12 mil subset alone?
Also, would not the population count include a) the residents (which will be greater than the 10 years enumerated Census count which misses people – thereby requiring the usage of the bi-annual estimated Census count that guesses how many people they missed) plus b) the daily guests and workers?