The latest study I could find that has the number of people in each income tax bracket was from 2017 based on data made available from the 2013 tax year.
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Now, the people making less than $15K/yr or less are the bottom two tax brackets, 0% and 10%. The people making $125K-$150K are in the 28% bracket.
The income in each bracket is as follows:
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Looking at the two charts we can clearly see that people in the 10% bracket across all filing types account for over 27.4 million people whereas people in the 28% bracket, which has a much wider income range than the requisite $125K-$150K/yr, accounts for only 4.6 million people.
We haven't even adjusted for the specific income ranges either, 'cause if I could do that the number of people making $125K-150K would be even lower and the number of people making $15K or less would be far higher 'cause that would be adding that 0% PLUS a good chunk of the 15% bracket.
Just comparing the raw numbers in those two tax brackets alone you see that there are almost exactly 6 times the number of people making less than $15K/yr than $125K-$150k/yr.
(source:
https://www.fool.com/retirement/2017/01/16/the-most-common-tax-bracket-in-america.aspx)