Yes, and that's median household income, not individual. It's closer to $60k in the US [1] but your point still stands.
[1] http://www.businessinsider.com/us-census-median-income-2017-...
[1] http://www.businessinsider.com/us-census-median-income-2017-...
Two full-time incomes for a household, you can easily get to $85,000 to $120,000.
What you're referring to, includes every person that generates any bit of consequential income. Part-time workers, or people earning $8k-$10k over the Summer, are included in the total median figure (which is closer to $30k).