After my third glass of wine, I was positive that the median income in the Boston area was $32K. Ooops.
2002 median household income:
Somerville: $46.3K
Cambridge: $47.9K
Boston: $39.6K
2002 per capita income:
Middlesex County: $46.5K
Suffolk County: $41.2K
(compare to $30.9K nationally).
Here's the 2000 Census income information.
So, what's my point? I don't know...