In the locales where one has a decent chance of earning more than $100,000 (like the Bay Area) that income is significantly below poverty level, even as a household of one. That is definitely not "upper class" by any definition.
Put differently: this chart shows the average temperature of the patients in a hospital. You can't just show average income across all of the US without considering cost of living and pretend that this result means something.
In the locales where one has a decent chance of earning more than $100,000 (like the Bay Area) that income is significantly below poverty level, even as a household of one. That is definitely not "upper class" by any definition.
Put differently: this chart shows the average temperature of the patients in a hospital. You can't just show average income across all of the US without considering cost of living and pretend that this result means something.