Just to put some numbers on it 2017 you'd need a net worth of about 1.1 million dollars to be in the top 10%.
https://dqydj.com/net-worth-brackets-wealth-brackets-one-per...
https://dqydj.com/net-worth-brackets-wealth-brackets-one-per...
I assume the average senior developer here in a mid-range city probably makes around $120k ~ $160k. Where does that fall into national averages on just income (and yes, I realize this article is talking about overall wealth and not necessarily income).
I wonder what mid range looks like.