A family I know in the East Village says they spend $12,000 per month. They live 2 parents, 2 kids in a 500 square feet rent stabilized apartment (a walkup). The 140 square feet living room has a kitchenette in the corner. I believe rent is $2,200 monthly. Last time we visited, my one year old found a syringe outside their door. Don't know what they make before tax but it can hardly be less than $200,000. I asked why they didn't just move away from Manhattan, but they would have to commute 1-2 hours more per day to find a cheaper solution. They were already aways from the kids 10-12 hours a day as it were so that was not an option.
Families in such situation is a big part of the so called upper class.