These studies need to take into account cost of living in different cities, which has more variance than it used to. $120k in SF or NY is barely going to get yo

These studies need to take into account cost of living in different cities, which has more variance than it used to. $120k in SF or NY is barely going to get you in the middle class. If high earnering gains have been made in these cities, then the actual distribution would be much worse.