Using sandag.org data warehouse and profile warehouse (sandag is the san diego association of governments).
Median income data from here: http://datawarehouse.sandag.org/Excel/ZIP%20codes.xls
Single family detached percentage taken from dividing “single family detached” for the zip by “total housing units” for the zip, for 1/1/2009 – data from linked pdf’s
Median age come from the pdf links.
And those who have median household incomes over $100k (only a few zips in San Diego county)
92130
Median household income (2008): $100,339
single family detached makes up 55% of housing in zip.
median age is 37.6 http://profilewarehouse.sandag.org/profiles/est/zip92130est.pdf