Well no, half aren't. The average household isn't a family of four. For the United States the average household consists of 2.53 people. Additionally, this isn

Well no, half aren't. The average household isn't a family of four. For the United States the average household consists of 2.53 people. Additionally, this isn't just a family of four in the study. It's a family of four with two kids below public school age. Meaning that they need childcare. That's included. As they get older that $75k number would go down, probably. Edit: looking at the study only 28% of people aren't "surviving" in King county. Keep in mind, they might have some stuff subsidized by the government or others.