Today I stumbled upon an interesting demographics tool:  a map (and list) showing political donations in the last presidential election by city, particular address, by the donor's occupation, employer or last name.  It's on the Huffington Post and appears to search nationwide.  It is not 100% complete, though.  I actually made a donation in the last election but my name and info are not showing up - I believe that this may not have included donations in the last few weeks of the election for tha treason (that's when I sent my donation in).  Anyway, have a look around - it's interesting!

The site states that for Los Gatos:

"$1,073,805 was given by people who identified their city as "Los Gatos, CA".
$280,419 from 256 people to Republicans (av = $1095 each)
$793,386 from 773 people to Democrats" (av = $1026 each)

In neighboring Saratoga:

$1,272,097 was given by people who identified their city as "Saratoga, CA".
$456,436 from 264 people to Republicans (av = $1729 each)
$815,661 from 579 people to Democrats  (av = $1409 each)

And in Monte Sereno:

$39,448 from 36 people to Republicans (av = $1095 each)
$171,415 from 93 people to Democrats (av = $1843 each)

Interested in other areas? Start your search here on the San Jose page and then look for whatever criteria you want to use.