Got very side-tracked yesterday, so here's my response that I typed up last night for the most part:
Highest-income metropolitan statistical areas in the United States - Wikipedia, the free encyclopedia
assuming two earners in the house hold, you have to get to around the 100 in terms of top metro areas before the median per person gets to the median you posted for the entire country.
As it happens, 38 of the 40 of those metro areas were on the top 40 by population.
In fact, only about 15% of the total population in that top 100 metro area list is held in those extra 62 metro areas, 8.6% if we include the two missing metro areas.
I also tend to dismiss household-level data because the definition of a household is pretty shit in my opinion*. Only around 49% of households are considered 'married households', with 34% being considered 'non-family' households. I'm exactly any better off based on the amount of money my room-mate makes, neither is a co-worker who happens to have three other room-mates (including a couple) in the house the four of them rent.
I also notice that there is no actual data source cited for that graph, so I went back to the census (where I pulled the actual data I was citing) and pulled some other interesting data (because it seems the data they were citing was from the 2000 census, which puts it just *slightly* out of date)
Case in point for the incorrect data: Atlanta, GA is list as 4.1 million people in that dataset but as of 2010, Atlanta, GA has 5.2 million people in the metro area.
Interesting data:
205 million working age adults live in metro areas, of those 66% make under 27.5k a year
78 million working age adults live in the principal cities for metro areas. Of those, 70% make under 27.5k a year.
43 million of those working age adults live in the top 40 cities in the country. 24 million live in the top 10 cities in the country.
*
census definition said:
A household includes all the persons who occupy a housing unit. A housing unit is a house, an apartment, a mobile home, a group of rooms, or a single room that is occupied (or if vacant, is intended for occupancy) as separate living quarters. Separate living quarters are those in which the occupants live and eat separately from any other persons in the building and which have direct access from the outside of the building or through a common hall. The occupants may be a single family, one person living alone, two or more families living together, or any other group of related or unrelated persons who share living arrangements.