A short piece on this subject in the SF Chronicle today includes a helpful pie chart. According to a Gallup survey of 1016 "adults" conducted in February 2001, 48% of respondents believe in the creationist model and another 9% lean that way. 28% embrace the "theory* of evolution," with another 5% apparently disposed to consider it, and a full 10% ventured no opinion on the subject.
cordially,
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*Yeah, and I have a "theory" that the sun occupies different positions in the sky at different times during the day. No, ye yokel 57%, that's not a theory, it's an observable phenomenon. Half a millenium ago there was a great dustup over whether a geocentric or a heliocentric model better accounted for the apparent movement of the sun. [link|http://z.iwethey.org/forums/render/content/show?contentid=111974|Galileo] lost that round, but Eppur si muove and all that, suckers.