Very interesting as $67,521 where I live would definitely not be middle class especially as “household income”. Is $136,000 considered “upper class”? Upper middle class? That sum ($136,000) would certainly not define “upper class” in my community. With that sum as the income for “middle class” I totally agree with you that two college graduates with Purdue degrees should be above middle class. I read a couple of weeks ago in some investor literature that upper class is defined as yearly income above $373,000 but I don’t remember the quoted source.This is true. Two married individuals with degrees should be above middle class, IMO.
Using $67,521 as the base, the Pew definition of middle income would include households earning between $45,239 and $135,042.
Most people who call themselves middle class often don’t realize how good they have it (or understand where the median income level is for America)