According to CNN's cost of living calculator (http://cgi.money.cnn.com/tools/costofliving/costofliving.htm...):
$100,000 in Mountain View, CA
= $58,302 in Austin, TX
= $73,992 in Seattle, WA
= $71,306 in Chicago, IL
= $61,660 in Cleveland, OH
And from a quick skim down any real estate listing for Mountain View, CA I think these numbers might be a bit on the high side.